Common plant names.
Below is a list of names of plants listed by common name. Click the letter of the alphabet to see a list of plants with common names beginning with that letter. Alternatively click here to see the plants listed alphabetically by botanic name.
Common names: ABCDEFGHIJKLMNOPQRSTUVWXYZ
| Common name | Botanic name |
|---|---|
| (often mis-spelt Spirea) | Spiraea |
| Aconite, Winter aconite | Eranthis hyemalis |
| Adam's needle | Yucca filamentosa |
| African Bermuda grass | Cynodon incompletus |
| African blackwood, Mpingo, Grenadilla, historically classified as African ebony | Dalbergia melanoxylon |
| African daisy | Arctotis |
| African love grass, Weeping love grass | Eragrostis curvula |
| African mallow, Cape mallow, dwarf hibiscus, false mallow | Anisodontea capensis |
| African marigold, Aztec marigold | Tagetes erecta |
| African olive | Olea africana |
| African violet | Saintpaulia |
| Agapanthus, African lily | Agapanthus africanus |
| Agapanthus, African blue lily, African lily | Agapanthus africanus |
| Ageratum | Ageratum 'Adriatic' |
| Ageratum, Floss flower | Ageratum 'Blue Mink' |
| Ageratum, Floss flower, Mexican paintbrush | Ageratum 'Blue Danube' |
| Agrimony | Agrimonia |
| Agrimony | Agrimonia eupatoria |
| Alder | Alnus glutinosa |
| Alder buckthorn | Frangula alnus |
| Alder buckthorn | Rhamnus frangula |
| Alexanders | Smyrnium olusatrum |
| Alexandra palm, King palm | Ptycosperma alexandrae |
| Allspice, Jamaica pepper | Pimenta dioica |
| Aloe vera, Barbados aloe | Aloe |
| Aloe vera | Aloe vera |
| Alpine auricula | Primula auricula |
| Alpine azalea, Trailing azalea | Loiseleuria procumbens |
| Alpine cat's tail | Phleum alpinum |
| Alpine foxtail | Alopecurus borealis |
| Alpine lady's mantle, Lady's mantle | Alchemilla alpina |
| Alpine meadow grass | Poa alpina |
| Alpine poppy, Dwarf poppy, Poppy | Papaver alpinum |
| Alpine rush | Juncus alpinoarticulatus |
| Alpine squill | Scilla bifolia |
| Alpine strawberry, Woodland strawberry | Fragaria versca |
| Alpine wallflower | Erysimum alpinum |
| Alum root | Heuchera cylindrica |
| Alum root, Coral bells | Heuchera |
| Alyssum | Alyssum |
| Alyssum | Alyssum maritimum |
| Alyssum | Alyssum saxatile |
| Alyssum | Alyssum saxatile var. compactum 'Gold Dust' |
| Alyssum, Sweet alyssum | Alyssum maritimum |
| Alyssum, Sweet alyssum | Alyssum orientale |
| Amaranthus | Amaranthus |
| Amaranthus, Love-lies-bleeding, Tassel flower | Amaranthus caudatus |
| Amaryllis | Amaryllis |
| Amaryllis | Hippeastrum |
| American beech | Fagus grandifolia |
| American blue-eyed grass | Sisyrinchium montanum |
| American fox sedge, Common fox sedge | Carex vulpinoidea |
| American garlic | Allium unifolium |
| American heath aster | Aster ericoides |
| American lime, Basswood | Tilia americana |
| American mahonia, Mahonia, Oregan grape | Mahonia aquifolium |
| American marram | Ammophila breviligulata |
| American needle grass | Stipa neesiana |
| American pondweed | Potamogeton epihydrus |
| American skink cabbage | Lysichiton americanus |
| American slough grass | Beckmannia syzigachne |
| American trout lily, Mahogany fawn lily | Erythronium revolutum |
| American violet, Sweet white violet | Viola blanda |
| Anemone | Anemone blanda |
| Anemone | Anemone coronaria |
| Anemone | Anemone x hybrida |
| Anemone | Anemone x hybrida 'Elegance' |
| Anemone | Anemone multifida |
| Angel wings, Sea cabbage | Senecio candidans 'Angel Wings' |
| Angel's tears | Brugmansia suaveolens |
| Angel's trumpet, Trumpet flower, Horn of plenty, Golden Angel's trumpet | Brugmansia aurea |
| Angel's trumpets, Datura | Brugmansia arborea |
| Angel's trumpets, Tree datura | Brugmansia |
| Angels' fishing rod | Dierama pulcherrimum |
| Angular Solomon's-seal | Polygonatum odoratum |
| Annual beard grass | Polypogon monspeliensis |
| Annual meadow grass | Poa annua |
| Annual vernalgrass | Anthoxanthum aristatum |
| Antwerp hollyhock, Fig-leaved hollyhock, Hollyhock | Alcea ficifolia |
| Apothecary's rose, Old red damask, Red rose of Lancaster, Crimson damask rose, French rose | Rosa gallica |
| Apple | Malus domestica |
| Apple | Malus domestica 'Bramley' |
| Apple | Malus domestica 'Egremont Russet' |
| Apple | Malus domestica 'Kidd's Orange Red' |
| Apple | Malus domestica 'Tommy White' |
| Apple | Malus domestica 'Ambassy' |
| Apple | Malus domestica 'Lord Lambourne' |
| Apple | Malus domestica 'Reverend W. Wilks' |
| Apple | Malus domestica 'St. Edmund's Pippin' |
| Apple | Malus domestica 'Falstaff' |
| Apple | Malus domestica 'Katy' |
| Apple | Malus domestica 'Meridian' |
| Apple | Malus domestica 'Pinova' |
| Apple | Malus domestica 'Queen Cox' |
| Apple | Malus domestica 'Saturn' |
| Apple | Malus domestica 'Winter Gem' |
| Apple | Malus domestica 'Ashmead's Kernel' |
| Apple | Malus domestica 'Golden Delicious' |
| Apple | Malus domestica 'Royal Gala' |
| Apple | Malus domestica 'Adams Pearman' |
| Apple | Malus domestica 'Veitch's Perfection' |
| Apple mint, Mint, Round-leaved mint | Mentha rotundiflora |
| Apple mint, Round-leaved mint, Woolly mint | Mentha suaveolens |
| Apple, Orchard apple | Malus domestica |
| Aquilegia, Columbine | Aquilegia vulgaris var. stellata 'Nora Barlow' |
| Argentinian vervain | Verbena bonariensis |
| Armstrong's Whipcord Hebe | Hebe armstrongii |
| Arrow bamboo | Pseudosasa japonica |
| Arrowhead | Sagittaria sagittifolia |
| Artemisia, Western mugwort | Artemisia ludoviciana |
| Arum lily | Zantedeschia aethiopica |
| Ash | Fraxinus |
| Ash, Common ash | Fraxinus excelsior |
| Asian birch | Betula utilis |
| Asian firethorn | Pyracantha rogersiana 'Flava' |
| Asian mahonia, Mahonia | Mahonia japonica |
| Asian skunk-cabbage, White skunk cabbage | Lysichiton camtschatcensis |
| Asparagus | Asparagus officinalis |
| Asparagus | Asparagus officinalis 'Blacklim' |
| Aspen | Populus tremula |
| Aster | Aster novi-belgii 'Ada Ballard' |
| Aster | Aster novi-belgii 'Crimson Brocade' |
| Aster | Aster novi-belgii 'Eventide' |
| Aster | Aster 'Giant Princess Azure Blue' |
| Aster | Aster 'Giants of California' |
| Aster | Aster novi-belgii 'Lady Frances' |
| Aster | Aster novi-belgii 'Lady in Blue' |
| Aster | Aster novi-belgii 'Rose Bonnet' |
| Aster | Aster 'Single Giant' |
| Aster | Aster novi-belgii 'Winston S Churchill' |
| Aster | Aster cordifolius |
| Aster | Aster cordifolius 'Little Carlow' |
| Aster | Aster ericoides 'Ester' |
| Aster | Aster lateriflorus 'Horizontalis' |
| Aster | Aster novae-angliae 'Lou Williams' |
| Aster | Aster novae-angliae 'Purple Dome' |
| Aster | Aster novi-belgii 'Carnival' |
| Aster | Aster novi-belgii 'Fellowship' |
| Aster | Aster novi-belgii 'Marie Ballard' |
| Astilbe | Astilbe |
| Astrantia | Astrantia major 'Roma' |
| Aubergine, Eggplant, Egg plant, Brinjal | Solanum melongena |
| Aubergine, Egg plant | Solanum melongena 'Moneymaker' |
| Aubergine, Egg plant | Solanum melongena 'Ophelia' |
| Aubergine, Egg plant | Solanum melongena 'Pintung Long' |
| Aubergine, Egg plant, Brinjal | Solanum melongena 'Baby Belle' |
| Aubretia, Rock cress, Aubrieta, Aubrietia | Aubrieta |
| Aubretia, Rock cress, Aubrieta, Aubrietia | Aubrieta Large flowered hybrids |
| Aubretia, Rock cress, Aubrieta, Aubrietia | Aubrieta deltoidea |
| Aubretia, Rock cress, Aubrieta, Aubrietia | Aubrieta 'Barker’s Double' |
| Aunt aliza | Crocosmia paniculata |
| Australian tree fern, Cooper's tree fern, Tree fern | Cyathea cooperi |
| Austrian copper | Rosa foetida |
| Austrian pine | Pinus nigra |
| Austrian yellow | Rosa foetida |
| Autumn cherry, Winter-flowering cherry, Rosebud cherry | Prunus x subhirtella 'Autumnalis' |
| Autumn crocus | Crocus nudiflorus |
| Autumn daffodil, Winter daffodil | Sternbergia lutea |
| Autumn fern, Japanese painted fern | Dryopteris erythrosora |
| Autumn lady's tresses | Spiranthes spiralis |
| Autumn squill | Scilla autumnalis |
| Avens | Geum |
| Avens | Geum coccineum |
| Avens, Geum | Geum |
| Awned Canary grass | Phalaris paradoxa |
| Azalea | Azalea |
| Azalea | Rhododendron |
| Azoricus thyme | Thymus caespititius |
| Baby's tears, Mother of thousands, mind-your-own-business, Pollyanna vine, bread and cheese | Soleirolia soleirolii |
| Balloon flower | Platycodon |
| Balsam poplar | Populus balsamifera |
| Baltic rush | Juncus balticus |
| Bamboo | Chusquea culeou |
| Bamboo | Phyllostachys aureosulcata |
| Bamboo | Phyllostachys bambusoides |
| Bamboo | Pleioblastus auricomus |
| Bamboo | Arundinaria japonica |
| Bamboo | Himalayacalamus falconeri 'Damarapa' |
| Bamboo | Phyllostachys edulis |
| Bamboo | Phyllostachys 'Shanghai 3' |
| Bamboo | Phyllostachys sulphurea |
| Bamboo | Phyllostachys vivax 'Aureocaulis' |
| Bamboo | Pleioblastus 'Gauntlettii' |
| Bamboo | Thamnocalamus crassinodus 'Kew Beauty' |
| Bamboo | Pleioblastus argenteostriatus f. pumilus |
| Bamboo | Pleioblastus humilis var. pumilus |
| Bamboo | Pleioblastus pumilus |
| Bamboo | Arundinaria 'Gauntlettii' |
| Bamboo | Arundinaria gauntlettii |
| Bamboo | Arundinaria pumila |
| Banana, Japanese banana | Musa basjoo |
| Banyan tree, Indian banyan tree, strangler fig | Ficus benghalensis |
| Barbary fig, Prickly pear | Opuntia ficus-indica |
| Barberry, Beberis | Berberis |
| Barberry, Beberis | Berberis buxifolia |
| Barberry, Beberis | Berberis candidula |
| Barberry, Beberis | Berberis darwinii |
| Barberry, Beberis | Berberis gagnepainii |
| Barberry, Beberis | Berberis hookeri |
| Barberry, Beberis | Berberis x irwinii |
| Barberry, Beberis | Berberis julianae |
| Barberry, Beberis | Berberis media |
| Barberry, Beberis | Berberis x ottawensis |
| Barberry, Beberis | Berberis x stenophylla |
| Barberry, Beberis | Berberis thunbergii |
| Barberry, Beberis | Berberis verruculosa |
| Barberry, Beberis | Berberis wilsonae |
| Barley | Hordeum vulgare |
| Barren brome | Bromus sterilis |
| Barrenwort | Epimedium grandiflorum |
| Barrenwort | Epimedium x versicolor |
| Basil | Ocimum basilicum |
| Basil, Sweet basil, Common basil | Ocimum basilicum |
| Bay Willow | Salix pentandra |
| Bay, Bay tree, Sweet bay, Bay laurel | Laurus nobilis |
| Beaked tasselweed | Ruppia maritima |
| Bear's breeches | Acanthus mollis |
| Bear's breeches | Acanthus spinosus |
| Bearberry cotoneaster | Cotoneaster dammeri |
| Bearded couch | Elymus caninus |
| Bearded fescue | Vulpia ciliata |
| Bearded iris | Iris |
| Bearded iris, Common German flag | Iris germanica |
| Bedstraw | Galium |
| Bedstraw, Lady's bedstraw | Galium verum |
| Bee orchid | Ophrys apifera |
| Beech | Fagus sylvatica |
| Beet | Beta |
| Beet, Beetroot, Chard | Beta vulgaris |
| Beetroot | Beta vulgaris |
| Beetroot, Garden beet | Beta vulgaris |
| Begonia | Begonia |
| Begonia | Begonia 'Betulia' |
| Begonia | Begonia 'Citrus Showers' |
| Begonia | Begonia 'Million kisses romance' |
| Begonia | Begonia x tuberhybrida 'Camelia' |
| Begonia | Begonia 'Cascade' |
| Begonia | Begonia 'Picotee' |
| Begonia | Begonia 'Apricot Shades' |
| Begonia | Begonia 'Dragon Wings' |
| Bell heather | Erica cinerea |
| Bell pepper, Pepper, Sweet pepper, Capsicum | Capsicum annuum |
| Belladonna lily, Amarillo, Jersey lily | Amaryllis belladonna |
| Bellflower, Clustered bellflower | Campanula glomerata |
| Bellflower | Campanula poscharskyana |
| Bellflower | Campanula glomerata Alba |
| Berberis, Barberry | Berberis thunbergii |
| Bergamot | Monarda |
| Bergamot, Bee balm | Monarda didyma |
| Bergamote orange | Citrus bergamia |
| Bermuda grass | Cynodon dactylon |
| Bible leaf, Alecost | Tanacetum balsamita |
| Bieberstein's crocus | Crocus speciosus |
| Bilberry, Blueberry, Whortleberry, Huckleberry | Vaccinium myrtillus |
| Bilberry, Blueberry, Whortleberry, Huckleberry | Vaccinium myrtillus 'Concord' |
| Birch | Betula |
| Bird cherry, Native British cherry | Prunus padus |
| Bird cherry | Prunus padus 'Colorata' |
| Bird cherry | Prunus padus var. commutata |
| Bird cherry | Prunus seoulensis |
| Bird's nest orchid | Neottia nidus-avis |
| Bird's-foot sedge | Carex ornithopoda |
| Bithynian vetch | Vicia bithynica |
| Biting stonecrop, Common stonecrop | Sedum acre |
| Bittersweet | Celastrus orbiculatus |
| Black alpine sedge | Carex atrata |
| Black bent | Agrostis gigantea |
| Black bog rush | Schoenus nigricans |
| Black bryony | Tamus communis |
| Black grass, Slender meadow foxtail | Alopecurus myosuroides |
| Black mulberry | Morus nigra |
| Black pine | Pinus nigra |
| Black poplar, Wild black poplar | Populus nigra |
| Black salsify, Spanish salsify, Serpent root, Viper's herb, Viper's grass, Black oyster plant | Scorzonera hispanica |
| Black tree fern, mamaku | Sphaeropteris medullaris |
| Black tree fern | Cyanthea medullaris |
| Black turf lily, Ornamental grass | Ophiopogon planiscapus 'Nigrescens' |
| Black-eyed Susan | Rudbeckia fulgida |
| Black-eyed Susan, Coneflower, Rudbeckia | Rudbeckia fulgida var. sullivantii 'Goldsturm' |
| Black-stemmed bamboo, Bamboo | Phyllostachys nigra |
| Blackberry | Rubus fruticosus |
| Blackberry, Bramble | Rubus tricolor |
| Blackcurrant, Currant | Ribes nigrum |
| Blackcurrant sage | Salvia microphylla |
| Blackthorn, Sloe, Sloe | Prunus spinosa |
| Bladder nut | Staphylea colchica |
| Bladder sedge | Carex vesicaria |
| Blanket flower | Gaillardia |
| Bleeding heart, Dicentra | Dicentra |
| Bleeding heart, Lady in the bath, Dicentra | Dicentra spectabilis |
| Bleeding heart | Dicentra formosa |
| Blue bamboo | Himalayacalamus hookerianus |
| Blue corn lily | Aristea ecklonii |
| Blue fescue | Festuca longifolia |
| Blue holly | Ilex x meserveae |
| Blue iris | Iris spuria |
| Blue lily, African lily, Lily of the Nile | Agapanthus praecox |
| Blue moor grass | Sesleria caerulea |
| Blue phlox | Phlox divaricata |
| Blue poppy, Himalayan poppy | Meconopsis x sheldonii |
| Blue vervain | Verbena hastata |
| Blue yucca | Yucca rigida |
| Blue-eyed grass | Sisyrinchium bermudiana |
| Bluebell | Hyacinthoides non-scripta |
| Blueberry | Vaccinium corymbosum 'Patriot' |
| Blueberry | Vaccinium corymbosum |
| Blunt flowered rush | Juncus subnodulosus |
| Blunt-leaved pondweed | Potamogeton obtusifolius |
| Bog arum, Marsh arum | Calla palustris |
| Bog asphodel | Narthecium ossifragum |
| Bog hair grass | Deschampsia setacea |
| Bog orchid | Hammarbya paludosa |
| Bog pondweed | Potamogeton polygonifolius |
| Bog primula | Primula |
| Bog sage | Salvia uliginosa |
| Bog sedge | Carex limosa |
| Bogbeam | Menyanthes trifoliata |
| Borecole, Kale, Curly greens, Curly kale | Brassica oleracea var. acephala (Acephala Group) 'Dwarf Green Curled' |
| Borecole, Kale, Collard greens | Brassica oleracea |
| Borrer's saltmarsh grass | Puccinellia fasciculata |
| Boston ivy | Parthenocissus tricuspidata |
| Bottle sedge | Carex rostrata |
| Bottlebrush | Callistemon |
| Bowles mint | Mentha x villosa |
| Box | Buxus |
| Box | Buxus sempervirens |
| Box elder, ash-leaved maple, boxelder maple, ashleaf maple | Acer negundo |
| Box honeysuckle, Shubby honeysuckle | Lonicera nitida |
| Box, Common box | Buxus sempervirens |
| Boxleaf azara | Azara microphylla |
| Bramble, Blackberry | Rubus |
| Bramley apple | Malus domestica 'Bramley's Seedling' |
| Branched bur reed | Sparganium erectum |
| Brass buttons | Cotula |
| Brass buttons | Cotula coronopifolia |
| Bread wheat | Triticum aestivatum |
| Breton fescue | Festuca armoricana |
| Bridal wreath | Francoa appendiculata |
| Bridal wreath | Spiraea nipponica 'June Bride' |
| Bridal wreath | Spiraea nipponica 'Snowmound' |
| Bridal wreath, Foam of May | Spiraea |
| Bridal wreath, Foam of May | Spiraea x arguta |
| Bristle aat | Avena strigosa |
| Bristle bent | Agrostis curtisii |
| Bristle club rush | Isolepis setacea |
| Bristle sedge | Carex microglochin |
| Bristly hollyhock | Alcea setosa |
| Bristol rock-cress | Arabis scabra |
| Broad bean | Vicia faba |
| Broad bean | Vicia faba 'Aquadulce Claudia' |
| Broad leaf thyme | Thymus pulegioides |
| Broad-leaved bamboo | Sasa palmata |
| Broad-leaved bellflower | Campanula lactiflora |
| Broad-leaved cottongrass | Eriophorum latifolium |
| Broad-leaved helleborine | Epipactis helleborine |
| Broad-leaved leek | Allium nigrum |
| Broad-leaved meadow grass | Poa chaixii |
| Broad-leaved pondweed | Potamogeton natans |
| Broad-leaved rush | Juncus planifolius |
| Broad-leaved sedge | Carex siderosticha |
| Broad-leaved thyme, Menthol plant, Spanish thyme, Indian borage | Plectranthus amboinicus |
| Broadleaf, New Zealand broadleaf | Griselinia littoralis |
| Broccoli, Calabrese | Brassica oleracea |
| Broccoli, Calabrese | Brassica oleracea var. botrytis (Italica Group) 'Corvet' F1 hybrid |
| Broccoli | Brassica oleracea var. botrytis (Botrytis Group) 'Extra Early Rudolph' |
| Brokali, Calabrese, Chinese kale | Brassica oleracea |
| Brook thistle, Ornamental thistle, Plume Thistle | Cirsium rivulare 'Atropurpureum' |
| Brooklime | Veronica beccabunga |
| Broom, Common broom | Cytisus scoparius |
| Broom | Genista |
| Brown beak sedge | Rhynchospora fusca |
| Brown bent | Agrostis vinealis |
| Brown bog rush | Schoenus ferrugineus |
| Brown galingale | Cyperus fuscus |
| Brown sedge | Carex disticha |
| Brown's peony | Paeonia brownii |
| Brussels sprout | Brassica oleracea (Gemmifera Group) |
| Brussels sprout | Brassica oleracea |
| Brussels sprout | Brassica oleracea var. gemmifera (Gemmifera Group) 'Montgomery' |
| Buckler leaf sorrel | Rumex scutatus |
| buddleia | Buddleja |
| Buddleia | Buddleja alternifolia |
| Buddleia, Summer lilac, butterfly bush | Buddleja davidii |
| Buddleia | Buddleja davidii 'Nanho Blue' |
| Buddleja | Buddleja |
| Buddleja | Buddleja 'High Five Purple' |
| Buffalo currant | Ribes odoratum |
| Bugbane | Cimicifuga simplex |
| Bugle | Ajuga |
| Bugle | Ajuga reptans |
| Bugle lily | Watsonia borbonica |
| Bulbous Canary grass, Harding grass | Phalaris aquatica |
| Bulbous foxtail | Alopecurus bulbosus |
| Bulbous meadow grass | Poa bulbosa |
| Bulbous rush | Juncus bulbosus |
| Bullwort, Queen Anne's lace, Bishop's flower | Ammi majus |
| Bulrush | Typha latifolia |
| Bunch flowered daffodil | Narcissus tazetta |
| Burnt orchid | Orchis ustulata |
| Busy Lizzie | Impatiens |
| Busy Lizzie | Impatiens omeiana |
| Busy Lizzie | Impatiens walleriana |
| Busy Lizzie | Impatiens 'Accent' |
| Busy Lizzie | Impatiens 'Fruit Cocktail' |
| Butcher's broom | Ruscus aculeatus |
| Buttercup | Ranunculus |
| Butterfly bush, Buddleia | Buddleja davidii 'Mongo' |
| Butterfly bush, Buddleia | Buddleja davidii |
| Butternut squash, Butternut | Cucubita moschata |
| Cabbage, Spring cabbage | Brassica oleracea |
| Cabbage, Chinese cabbage | Brassica rapa |
| Cabbage rose | Rosa centifolia |
| Cactus | Parodia formosa |
| Calamondin | x Citrofortunella microcarpa |
| California brome | Bromus carinata |
| California flannel bush | Fremontodendron 'California Glory' |
| California flannel bush | Fremontodendron 'Pacific Sunset' |
| California flannel bush | Fremontodendron californicum |
| California poppy | Eschscholzia californica |
| Californian lilac | Ceanothus |
| Calla lily | Zantedeschia |
| camellia | Camellia |
| camellia | Camellia x williamsii 'Donation' |
| Camomile | Chamaemelum nobile 'Flore Pleno' |
| Campanula | Campanula |
| Campanula | Campanula 'Bussage Blue' |
| Campanula, Milky bellflower | Campanula lactiflora |
| Canada thistle, Creeping thistle | Cirsium arvense |
| Canadian arrowhead | Sagittaria rigida |
| Canadian pond weed | Elodea canadensis |
| Canadian waterweed, Canadian pond weed | Elodea canadensis |
| Canary date palm, Patio palm | Phoenix canariensis |
| Canary grass | Phalaris canariensis |
| Candelabra primula, Primula | Primula |
| Candelabra primula | Primula bulleyana |
| Candelabra primula | Primula chungensis |
| Candelabra primula | Primula japonica |
| Candelabra primula | Primula prolifera |
| Candy cane sorrel | Oxalis versicolor |
| Candytuft | Iberis |
| Canna lily | Canna |
| Canterbury bell, Cup and saucer | Campanula |
| Cape daisy, African daisy | Osteospermum |
| Cape fuchsia | Phygelius |
| Cape hyacinth | Galtonia |
| Cape primrose | Streptocarpus |
| Cape-pondweed | Aponogeton distachyos |
| Caraway thyme | Thymus herba-barona |
| Cardinal flower, Lobelia | Lobelia cardinalis |
| Cardoon, Artichoke, Globe artichoke | Cynara cardunculus |
| Carnation | Dianthus 'Arosa' |
| Carnation sedge | Carex panicea |
| Carrot | Daucus carota |
| Catmint | Nepeta |
| Catmint | Nepeta 'Six Hills Giant' |
| Catmint | Nepeta x faassenii |
| Caucasian lime, Crimean lime | Tilia x euchlora |
| Caucasian snowdrop | Galanthus caucasicus |
| Caucasian walnut, Caucasian wingnut | Pterocarya fraxinifolia |
| Caulescent red-hot poker | Kniphofia caulescens |
| Cauliflower | Brassica oleracea |
| Ceanothus, Californian lilac | Ceanothus |
| Ceanothus | Ceanothus x delileanus |
| Ceanothus, Californian lilac | Ceanothus arboreus |
| Ceanothus, Californian lilac | Ceanothus x delileanus |
| Cedar, Lebanon cedar, Cedar of Lebanon | Cedrus libani |
| Celeriac, Turnip-rooted celery | Apium graveolens var. rapaceum 'Alabaster' |
| Celery | Apium graveolens |
| Celery | Apium graveolens dulce 'Victoria' |
| Celosia | Celosia argentea |
| Century plant, American aloe | Agave americana |
| Chamomile, Dog fennel | Anthemis |
| Chamomile, Lawn chamomile | Chamaemelum nobile 'Treneague' |
| Chasmanthe | Chasmanthe bicolor |
| Chaste tree, vitex, chasteberry, lilac chastetree, monk's pepper | Vitex agnus-castus |
| Cherry | Prunus |
| Cherry, Sweet cherry | Prunus avium 'Fastigiata' |
| Cherry, Sweet cherry | Prunus avium 'Mount Fuji' |
| Cherry | Prunus cerasus |
| Cherry | Prunus avium 'Stella' |
| Cherry | Prunus cerasus 'Maynard' |
| Cherry | Prunus avium Celeste® |
| Cherry | Prunus avium 'Penny' PBR |
| Cherry | Prunus avium 'Colney' |
| Cherry | Prunus avium 'Summer Sun' |
| Cherry | Prunus avium 'Sweetheart' |
| Cherry | Prunus avium 'Sunburst' |
| Cherry | Prunus avium 'Merchant' |
| Cherry laurel, Laurel | Prunus laurocerasus |
| Cherry plum | Prunus cerasifera |
| Chervil | Anthriscus cerefolium |
| Chestnut rush | Juncus castaneus |
| Chickweed | Stellaria media |
| Chicory (UK), Leaf chicory, Endive, Belgian endive, Radicchio, Radichetta | Cichorium intybus var. foliosum |
| Chicory (UK), Leaf chicory, Endive, Belgian endive, Radicchio, Radichetta | Cichorium intybus var. foliosum 'Grumolo Bionda' |
| Chicory, Common chicory | Cichorium intybus |
| Chilean iris | Libertia formosa |
| Chilean lantern tree | Crinodendron hookerianum |
| Chilean wine palm | Jubaea chilensis |
| Chilli | Capsicum |
| Chilli | Capsicum anuum |
| China rose | Rosa chinensis |
| Chinese artichoke, Artichoke | Stachys affinis |
| Chinese broccoli | Brassica oleracea |
| Chinese buttrercup | Trollius chinensis |
| Chinese cabbage, Cabbage | Brassica rapa |
| Chinese elm | Ulmus parvifolia |
| Chinese fan palm | Livistona chinensis |
| Chinese fountain grass | Pennisetum alopecuroides 'Hameln' |
| Chinese gooseberry, Kiwi fruit | Actinidia deliciosa |
| Chinese honeysuckle, Poor man's box | Lonicera nitida |
| Chinese juniper | Juniperus chinensis |
| Chinese lantern | Physalis alkekengi |
| Chinese meadow rue | Thalictrum delavayi |
| Chinese rhubarb | Rheum palmatum |
| Chinese sage | Salvia miltiorrhiza |
| Chinese white birch | Betula albosinesnis |
| Chinese wisteria, Chinese kidney bean | Wisteria sinensis |
| Chive | Allium sphaerocephalon |
| Chives | Allium schoenoprasum |
| Chocolate mint | Mentha |
| Chocolate mint, Chocolate peppermint | Mentha x piperita f. citrata 'Chocolate' |
| Chocolate vine | Akebia quinata |
| Chokeberry | Aronia melanocarpa |
| Christmas berry | Photinia x fraseri 'Canivily' |
| Christmas berry | Photinia x fraseri 'Little Red Robin' |
| Christmas berry | Photinia x fraseri LOUISE ('Mclarlou'PBR) |
| Christmas berry | Photinia x fraseri 'Carré Rouge' |
| Christmas box | Sarcococca humilis |
| Christmas cacti, Pork and Beans, Jelly bean plant | Sedum x rubrotinctum |
| Christmas cactus, Crab cactus | Schlumbergera truncata |
| Christmas cactus, Crab cactus | Schlumbergera x buckleyi |
| Christmas cherry, Ornamental orange, Winter cherry, Jerusalem cherry, Ipecac Nightshade, Madeira winter cherry | Solanum pseudocapsicum |
| Christmas cherry | Solanum capsicastrum |
| Christmas rose | Helleborus niger |
| Christmas rose, Lenten rose | Helleborus |
| Chusan palm, Chinese windmill palm, Hemp palm, Hardy windmill palm, Windmill palm, Palm | Trachycarpus fortunei |
| Cineraria | Senecio cineraria |
| Cineraria | Senecio x hybridus |
| Clary sage | Salvia sclarea |
| Clematis | Clematis |
| Clematis | Clematis 'Madame Julia Correvon' |
| Clematis | Clematis 'Polish Spirit' |
| Clematis | Clematis 'Ville de Lyon' |
| Clematis | Clematis alpina |
| Clematis | Clematis alpina var. ochotensis 'Frances Rivis' |
| Clematis | Clematis x cartmanii |
| Clematis | Clematis macropetala |
| Clematis | Clematis montana |
| Clematis | Clematis 'Bill MacKenzie' |
| Clematis | Clematis rehderiana |
| Clematis | Clematis tangutica |
| Clematis | Clematis texensis |
| Clematis | Clematis x triternata 'Rubromarginata' |
| Clematis | Clematis viticella |
| Clematis | Clematis viticella 'Madame Julia Correvon' |
| Clematis | Clematis viticella 'Polish Spirit' |
| Clematis | Clematis 'Purpurea Plena Elegans' |
| Clematis | Clematis viticella 'Ville de Lyon' |
| Clematis | Clematis alpina 'Candy' |
| Clematis | Clematis tangutica 'Bill MacKenzie' |
| Clematis | Clematis orientalis 'Bill MacKenzie' |
| Clematis | Clematis viticella 'Purpurea Plena Elegans' |
| Clematis | Clematis viticella 'Elegans Plena' |
| Climbing corydalis | Corydalis |
| Climbing fuchsia | Fuchsia |
| Climbing hydrangea | Hydrangea petiolaris |
| Close-headed alpine sedge | Carex norvegica |
| Clove tree, Clove | Syzygium aromaticum |
| Club sedge | Carex buxbaumii |
| Cobra lily | Chasmanthe aethiopica |
| Cobra lily | Darlingtonia californica |
| Cock's foot | Dactylis glomerata |
| Cockscomb | Celosia cristata |
| Cockspur | Echinochloa crus-galli |
| Coconut palm, Coconut | Cocos nucifera |
| Coleus | Solenostemon |
| Colorado spruce | Picea pungens |
| Columbine, Granny's bonnet | Aquilegia |
| Columbine, Aquilegia | Aquilegia vulgaris 'Robin' |
| Columbine | Aquilegia alpina |
| Columbine | Aquilegia bertolonii |
| Columbine | Aquilegia chrysantha |
| Columbine | Aquilegia fragrans |
| Columbine | Aquilegia scopulorum |
| Columbine | Aquilegia vulgaris var. stellata |
| Columbine | Aquilegia vulgaris |
| Columbine, Aquilegia | Aquilegia vulgaris var. stellata 'Blue Barlow' (Barlow series) |
| Columbine | Aquilegia vulgaris var. stellata 'Ruby Port' |
| Columbine | Aquilegia flabellata 'Georgia' (State series) |
| Comfrey | Symphytum |
| Common bent | Agrostis capillaris |
| Common box, Box | Buxus sempervirens |
| Common buckthorn, Purging buckthorn | Rhamnus cathartica |
| Common club rush | Schoenoplectus lacustris |
| Common comfrey, True comfrey | Symphytum officinale |
| Common cord grass | Spartina anglica |
| Common cottongrass | Eriophorum angustifolium |
| Common couch | Elytrigia repens |
| Common duckweed | Lemna minor |
| Common elder, Elder, Elderberry | Sambucus nigra |
| Common English ivy | Hedera helix |
| Common fennel, Fennel, Giant fennel | Foeniculum vulgare |
| Common fig, Fig, Edible fig | Ficus carica 'Digitata' |
| Common gum cistus | Cistus grandiflorus |
| Common gum cistus | Cistus x cyprius |
| Common hogweed | Heracleum sphondylium |
| Common hollyhock | Althaea rosea |
| Common hyssop | Hyssopus officinalis |
| Common ivy | Hedera helix 'Goldchild' |
| Common ivy | Hedera helix 'Gold Harald' |
| Common ivy | Hedera helix 'Golden Child' |
| Common ivy | Nerine bowdenii 'Stefanie' |
| Common laurustinus | Viburnum tinus |
| Common lilac | Syringa vulgaris |
| Common lime | Tilia x vulgaris |
| Common maidenhair fern, Maidenhair fern | Adiantum aethiopicum |
| Common mallow, Field mallow | Malva sylvestris |
| Common morning glory, Convolvulus | Ipomoea purpurea |
| Common myrtle, Myrtle | Myrtus communis |
| Common nettle, Stinging nettle, Nettle, Stinger | Urtica dioica |
| Common peony, Anomalous peony | Paeonia anomala |
| Common pivet, Wild privet | Ligustrum vulgare |
| Common rasp-fern | Doodia media |
| Common reed | Phragmites australis |
| Common rock rose | Helianthemum nummularium |
| Common rosemary, Rosemary | Rosmarinus officinalis |
| Common rue | Ruta graveolens |
| Common sage, Sage | Salvia officinalis |
| Common saltmarsh grass | Puccinellia maritima |
| Common sedge | Carex nigra |
| Common spike rush | Eleocharis palustris |
| Common spotted orchid | Dactylorhiza fuchsii |
| Common thyme, Thyme | Thymus vulgaris |
| Common toadflax | Linaria vulgaris |
| Common wallflower | Cheiranthus cheiri |
| Common wallflower, bleeding heart | Erysimum cheiri |
| Common wallflower, bleeding heart | Erysimum suffruticosum |
| Common water plantain, Water plantain | Alisma plantago-aquatica |
| Common yellow day lily, Yellow day-lily | Hemerocallis lilioasphodelus |
| Common yucca, Adam's needle | Yucca filamentosa |
| Compact brome | Bromus madritensis |
| Compact grape hyacinth | Muscari botryoides |
| Compact Marjoram | Origanum vulgare |
| Compact rush | Juncus conglomeratus |
| Coneflower | Echinacea purpurea |
| Coneflower | Rudbeckia laciniata 'Herbstsonne' |
| Coneflower, Rudbeckia | Rudbeckia hirta |
| Coneflower, Cut-leaved coneflower, Thimbleweed | Rudbeckia laciniata 'Goldquelle' |
| Coneflower, North American daisy | Rudbeckia |
| Confused fescue | Festuca lemanii |
| Convolvulus | Convolvulus cneorum |
| Copper beauty, Witch hazel | Hamamelis x intermedia 'Jelena' |
| Coral bark maple | Acer palmatum 'Sango-kaku' |
| Coral bark maple | Acer 'Senkaki' |
| Coral bark maple | Acer palmatum var. dissectum 'Sango-kaku' |
| Coral flower | Heuchera |
| Coral plant | Berberidopsis corallina |
| Coral plant | Russelia equisetiformis |
| Coral spurge | Euphorbia corallioides |
| Coral-bark maple | Acer palmatum 'Senkaki' |
| Coralberry | Symphoricarpos orbiculatus |
| cordyline | Cordyline indivisa |
| cordyline, Cabbage Tree, Torbay Palm | Cordyline australis |
| Coreopsis | Coreopsis |
| Coriander | Coriandrum sativum |
| Corkscrew hazel, Harry Lauder's walking stick, Contorted hazel | Corylus avellana |
| Corkscrew rush | Juncus effusus |
| Corkscrew willow | Salix babylonica |
| Corn cockle | Agrostemma githago |
| Corn lily | Ixia |
| Corn marigold | Chrysanthemum segetum |
| Corn poppy, Shirley poppy, Common poppy, Poppy | Papaver rhoeas |
| Cornflower | Centaurea cyanus |
| Cornstalk dracaena, Striped dracaena, Chinese money tree | Dracaena fragrans |
| Corsican mint | Mentha |
| Corsican mint, Spanish mint | Mentha requienii |
| Corsican pine | Pinus nigra |
| Cosmos | Cosmos bipinnatus |
| Cotoneaster | Cotoneaster conspicuus |
| Cotoneaster | Cotoneaster microphyllus |
| Cotoneaster | Cotoneaster splendens |
| Cotton deergrass | Trichophorum alpinum |
| Cotton lavender, Lavender cotton | Santolina chamaecyparissus |
| Couch grass, Quitch grass, scutch grass, twitch grass | Elymus repens |
| Courgette | Cucurbita pepo |
| Courgette | Cucurbita pepo 'Tuscany' |
| Courgette | Cucubita pepo 'Defender' |
| Cow parsley | Anthriscus sylvestris |
| Cowberry, lingonberry, mountain cranberry, partridgeberry | Vaccinium vitis-idea |
| Cowslip | Primula veris |
| Cox apple | Malus domestica 'Cox's Orange Pippin' |
| Coyote willow | Salix exigua |
| Crab apple | Malus |
| Crab apple | Malus x macromalus |
| Crab apple | Malus hupehensis |
| Crab apple | Malus toringo |
| Crab apple | Malus x robusta |
| Crab apple | Malus sargentii |
| Crab apple | Malus tschonoskii |
| Crab apple 'Everest' | Malus |
| Crab apple, American crab apple | Malus coronaria |
| Crab apple, Wild crab, Apple | Malus sylvestris |
| Crack willow | Salix fragilis |
| Cranesbill | Geranium |
| Cranesbill, Geranium, Hardy geranium, Cranesbill | Geranium robertianum |
| Creeping bent | Agrostis stolonifera |
| Creeping Blue Blossom | Ceanothus thyrsiflorus |
| Creeping dogwood | Cornus canadensis |
| Creeping lady's-tresses | Goodyera repens |
| Creeping phlox | Phlox subulta |
| Creeping savory | Satureja repandra |
| Creeping savory | Satureja spicigera |
| Creeping soft grass | Holcus mollis |
| Creeping willow | Salix repens |
| Crepping jenny, Moneywort | Lysimachia nummularia |
| Cress | Lepidium sativum |
| Crested dog's tail | Cynosurus cristatus |
| Crested hair grass | Koeleria macrantha |
| Cretan tulip | Tulipa saxatilis |
| Crevice alumroot, Small-flowered alumroot | Heuchera micrantha 'Palace Purple' |
| Crevice alumroot, Small-flowered alumroot | Heuchera micrantha |
| Crimson flag | Hesperantha coccinea 'Major' |
| Crimson flag lily | Schizostylis coccinea 'Major' |
| Crisp mallow | Malva verticillata |
| Crocosmia, Montbretia | Crocosmia |
| Crocosmia, Montbretia | Crocosmia x latifolia 'Lucifer' |
| Crocosmia, Giant montbretia | Crocosmia masoniorum |
| Crocosmia, Montbretia | Crocosmia pottsii 'Culzean Pink' |
| Crocosmia, Montbretia | Crocosmia 'Spitfire' |
| Crocus, Early crocus | Crocus tommasinianus |
| Crocus, Hairy crocus | Crocus pulchellus |
| Cross-leaved heath, heather | Erica tetralix |
| Crossleaf heath | Erica tetralix |
| Crown imperial | Fritillaria imperialis 'Lutea' |
| Crown of thorns | Euphorbia milii |
| Crystal anthurium, Strap flower | Anthurium crystallinum |
| Cucumber | Cucumis sativus |
| Cucumber | Cucumis sativus 'Burpless Tasty Green' |
| Culver's root | Veronicastrum virginicum |
| Curled pondweed | Potamogeton crispus |
| Curly leaf parsley, Parsley | Petroselinum crispum |
| Curly waterweed | Lagarosiphon major |
| Curly wood sage, Wood sage, Wood germander | Teucrium scorodonia |
| Curry plant, Helichrysum | Helichrysum italicum |
| Curved hard grass | Parapholis incurva |
| Curved sedge | Carex maritima |
| Curved wood rush | Luzula arcuata |
| Curved-leaved Spanish dagger | Yucca recurvifolia |
| Cyclamen, Eastern cyclamen, Round-leaved cyclamen | Cyclamen |
| Cyclamen | Cyclamen coum |
| Cyclamen | Cyclamen europaeum |
| Cyclamen | Cyclamen fatrense |
| Cyclamen | Cyclamen neapolitanum |
| Cyclamen | Cyclamen persicum |
| Cyclamen | Cyclamen purpurascens |
| cyclamen | Cyclamen hederifolium subsp. crassifolium |
| Cyclamen flowered daffodil | Narcissus cyclamineus |
| Cyperus sedge | Carex pseudocyperus |
| Daffodil | Narcissus |
| Daffodil, Dwarf daffodil | Narcissus 'February Gold' |
| Daffodil, Dwarf daffodil | Narcissus 'Jenny' |
| Daffodil, Dwarf daffodil | Narcissus 'Soleil d'Or' |
| Daffodil | Narcissus pseudonarcissus |
| Dahlia | Dahlia |
| Dahlia | Dahlia 'Bishop of Llandaff' |
| Dahlia | Dahlia 'Burlesca' |
| Dahlia | Dahlia pinnata |
| Daisy bush | Olearia macrodonta |
| Daisy bush | Olearia nummulariifolia |
| Damson | Prunus domestica |
| Damson | Prunus inisititia |
| Daphne | Daphne mezereum |
| Daphne | Daphne bholua |
| Daphne | Daphne odora |
| Dark mullein | Verbascum nigrum |
| Dark red helleborine | Epipactis atrorubens |
| Dark-leaved willow | Salix myrsinifolia |
| Davall's sedge | Carex davalliana |
| Dawn redwood | Metasequoia |
| Dawyck beech | Fagus sylvatica 'Dawyck Gold' |
| Dawyck beech, Copper beech | Fagus sylvatica 'Dawyck Purple' |
| Daylily, Day lily | Hemerocallis |
| Daylily, Flava daylily | Hemerocallis flava |
| Daylily, Orange daylily, Tiger daylily, Ditch daylily | Hemerocallis fulva |
| Daylily | Hemerocallis 'Catherine Woodbery' |
| Dead nettle | Lamium |
| Dead nettle | Lamium maculatum 'Purple Dragon' |
| Dead nettle | Lamium maculatum 'Pink Pewter' |
| Dead nettle | Lamium orvala |
| Deadly nightshade, Belladonna | Atropa bennadolla |
| Dear-horn cactus | Aloe arborescens |
| Deergrass | Trichophorum cespitosum |
| Delphinium | Delphinium |
| Delphinium | Delphinium elatum |
| Dense flowered orchid | Neotinea maculata |
| Dense silkybent | Apera interrupta |
| Devil's bit scabious | Succisa pratensis |
| Dianthus, Carnation, Pink | Dianthus |
| Dianthus, Carnation, Pink | Dianthus |
| Dianthus, Carnation, Pink | Dianthus scardicus |
| Dicentra | Dicentra eximia |
| Dicentra | Dicentra formosa |
| Dicentra, Bleeding heart, Lady in the bath, Dicentra | Dicentra spectabilis |
| Dioecious sedge | Carex dioica |
| Distant sedge | Carex distans |
| Divided sedge | Carex divisa |
| Dog rose | Rosa canina |
| Dog violet | Viola riviniana |
| Dog's mercury | Mercurialis perennis |
| Dog's tooth violet | Erythronium californicum |
| Dog's tooth violet | Erythronium dens-canis |
| Dog's tooth violet | Erythronium kondo |
| Dogwood, Red barked dogwood | Cornus alba |
| Dogwood | Cornus alternifolia |
| Dogwood | Cornus kousa |
| Dogwood | Cornus sanguinea |
| Dogwood | Cornus stolonifera 'Flaviramea' |
| Dotted sedge | Carex punctata |
| Double daisy | Bellis perennis |
| double gean | Prunus avium 'Plena' |
| Double kerria | Kerria japonica |
| Douglas Fir, Columbian pine | Pseudotsuga menziesii |
| downy Japanese maple | Acer japonicum 'Aconitifolium' |
| Downy oat grass | Helictotrichon pubescens |
| Downy willow | Salix lapponum |
| Downy-fruited sedge | Carex filiformis |
| Dragon arum | Dracunculus vulgaris |
| Drooping brome | Bromus tectorum |
| Drooping star of Bethlehem | Ornithogalum nutans |
| Drumstick primula | Primula denticulata |
| Duck potato | Sagittaria latifolia |
| Duckweed | Lemna |
| Dune fescue | Vulpia fasciculata |
| Dune lupin | Lupinus chamissonis |
| Durra, Sorghum, Great millet | Sorghum bicolor |
| Dutch lavender | Lavandula x intermedia |
| Dwarf aster | Aster 'Starlight' |
| Dwarf bamboo | Pleioblastus pygmaeus |
| dwarf birch, Arctic birch | Betula nana |
| Dwarf comfrey, Ornamental Comfrey | Symphytum grandiflorum |
| Dwarf comfrey | Symphytum ibericum |
| Dwarf daffodil | Narcissus 'Jetfire' |
| Dwarf daffodil | Narcissus |
| Dwarf daffodil | Narcissus 'Tête-à -Tête' |
| Dwarf daffodil | Narcissus 'Topolino' |
| Dwarf eelgrass | Zostera noltei |
| Dwarf gorse | Ulex minor |
| Dwarf meadow rue | Thalictrum minus 'Adiantifolium' |
| Dwarf mountain pine, Swiss mountain pine, drooping cone pine | Pinus mugo |
| Dwarf or Littleleaf lilac | Syringa microphylla |
| Dwarf Oregon grape | Mahonia nervosa |
| Dwarf pine, Pine, Mountain pine, Swiss mountain pine | Pinus mugo |
| Dwarf pine, Mountain pine, Swiss mountain pine | Pinus mugo |
| Dwarf red-hot poker | Kniphofia triangularis |
| Dwarf runner bean, Runner bean | Phaseolus vulgaris |
| Dwarf rush | Juncus capitatus |
| Dwarf sedge | Carex humilis |
| Dwarf spike rush | Eleocharis parvula |
| Dwarf white lavender, English lavender | Lavandula angustifolia |
| Dwarf white-striped bamboo, Variegated bamboo | Pleioblastus variegatus |
| Dwarf white-striped bamboo, Variegated bamboo | Pleioblastus fortunei 'Variegata' |
| Dwarf zebra grass | Miscanthus sinensis 'Strictus Compactus' |
| Dyers chamomile | Anthemis tinctoria |
| Dyers woodruff | Asperula tinctoria |
| Early Coralroot, Coralroot Orchid | Corallorhiza trifida |
| Early Dutch honeysuckle | Lonicera periclymenum 'Belgica' |
| Early hairgrass | Aira praecox |
| Early marsh orchid | Dactylorhiza incarnata |
| Early meadow grass | Poa infirma |
| Early millet | Milium vernale |
| Early purple orchid | Orchis mascula |
| Early sandgrass | Mibora minima |
| Early spider orchid | Ophrys sphegodes |
| Early star of Bethlehem | Gagea bohemica |
| East Indian oleander, Jamaica South Sea rose, Rose bay | Nerium oleander |
| East Indian oleander, Jamaica South Sea rose, Rose bay | Nerium oleander 'Laurier Rose' |
| Eastern gladiolus | Gladiolus communis |
| Eastern maple, Paperbark maple, Paper-bark maple | Acer griseum |
| Eastern redbud | Cercis canadensis |
| Eelgrass | Zostera marina |
| Elaeagnus | Elaeagnus x ebbingei |
| Elaeagnus | Elaeagnus pungens |
| Elder | Sambucus |
| Elder | Sambucus nigra |
| Elderberry | Sambucus nigra 'Strait-Laced'® |
| Elephant ears | Bergenia x schmidtii |
| Elephant garlic | Allium ampeloprasum var. ampeloprasum |
| Elephant's ears, Elephant ears | Bergenia crassifolia |
| Elephant's ears, Elephant ears, St Patrick's cabbage, Pip squeak plant | Bergenia |
| Elephant's rhubarb, Giant rhubarb, Gunnera | Gunnera manicata |
| Elm | Ulmus |
| Elongated sedge | Carex elongata |
| English elm, Elm | Ulmus minor |
| English hawthorn, Hawthorn, Quickthorn, May, Whitethorn, Thorn | Crataegus monogyna |
| English iris | Iris latifolia |
| English lavender | Lavandula |
| English lavender | Lavandula angustifolia |
| English lavender, Old English lavender | Lavandula angustifolia |
| English plantain, Ribwort plantain, Ribleaf | Plantago lanceolata |
| Erman birch, Gold birch | Betula ermanii |
| Esthwaite waterweed | Hydrilla verticillata |
| Estuarine sedge | Carex recta |
| Ethiopian banana | Musa ensete |
| Eucalyptus | Eucalyptus glaucescens |
| Euphorbia | Euphorbia |
| Euphorbia, Mrs Robb's bonnet | Euphorbia amygdaloides |
| Euphorbia | Euphorbia cornigera |
| Euphorbia | Euphorbia dulcis |
| Euphorbia | Euphorbia lathyris |
| Euphorbia | Euphorbia sikkimensis |
| European beech, Beech | Fagus sylvatica |
| European field pansy | Viola arvensis |
| European marram grass | Ammophila arenaria |
| Evening primrose | Oenothera |
| Evening primrose | Oenothera biennis |
| Evergreen bamboo | Pleioblastus |
| Evergreen clematis | Clematis armandii |
| Evergreen honeysuckle | Lonicera japonica 'Halliana' |
| Evergreen oak, Holm oak, Holly oak, Maritime oak, Ilex oak | Quercus ilex |
| Everlasting flower | Helichrysum amorginum RUBY CLUSTER ('Blorub' PBR) |
| Everlasting sweet pea | Lathyrus 'Lord Anson's Pea' |
| Fairy ring champignon | Marasmius oreades |
| False acacia, Locust | Robinia pseudoacacia 'Frisia' |
| False bird of paradise, Hanging lobster claw, wild banana | Heliconia rostrata |
| False brome, Wood brome | Brachypodium sylvaticum |
| False castor oil plant, Japanese aralia | Fatsia japonica |
| False castor oil plant, Glossy leaf paper plant | Fatsia |
| False fox sedge | Carex otrubae |
| False holly | Osmanthus heterophyllus |
| False mallow | Sidalcea 'Elsie Heugh' |
| False oat grass | Arrhenatherum elatius |
| False privet, Hardy olive, green olive, Jasmine box | Phillyrea latifolia |
| False sedge, Simple bog sedge | Kobresia simpliciuscula |
| False twayblade | Liparis |
| False wheat, Darnel, poison darnel, cockle | Lolium temulentum |
| Farrer viburnum | Viburnum farreri |
| Fastigiate beech, Beech | Fagus sylvatica |
| Fat duckweed | Lemna gibba |
| Feather grass, Mexican feather grass, Texas needle grass | Stipa tenuissima |
| Feather reed grass | Calamagrostis x acutiflora 'Overdam' |
| Feather reed grass | Calamagrostis x acutiflora |
| February daphne, Mezereum | Daphne mezereum |
| Fen orchid | Liparis loeselii |
| Fen pondweed | Potamogeton coloratus |
| Fen violet | Viola persicifolia |
| Fen wood rush | Luzula pallidula |
| Fennel, Florence fennel, Sweet fennel | Foeniculum vulgare |
| Fennel pondweed | Potamogeton pectinatus |
| Fern | Dryopteris |
| Fern | Dryopteris wallichiana |
| Fern | Matteuccia struthiopteris |
| Fern | Polystichum |
| Fern | Polystichum setiferum |
| Fern-grass | Catapodium rigidum |
| Fern-leaf yarrow | Achillea filipendulina |
| Fern-leaved beech, Cut-leaf beech | Fagus sylvatica |
| Fern-leaved clematis | Clematis cirrhosa |
| Fernleaf lavender, Egyptian lavender | Lavandula pinnata |
| Feverfew | Tanacetum parthenium |
| Few-flowered garlic | Allium paradoxum |
| Few-flowered sedge | Carex pauciflora |
| Few-flowered spike rush | Eleocharis quinqueflora |
| Fibrous tussock sedge | Carex appropinquata |
| Field brome | Bromus arvensis |
| Field garlic | Allium oleraceum |
| Field maple | Acer campestre |
| Field mushroom | Agaricus campestris |
| Field rose | Rosa arvensis |
| Field scabious | Knautia |
| Field wood rush | Luzula campestris |
| Fig, Edible fig, Common fig | Ficus carica |
| Fine-leaved sheep's fescue | Festuca filiformis |
| Fingered sedge | Carex digitata |
| Fire flower, Cape honeysuckle | Tecomaria capensis |
| Fish tail palm | Caryota urens |
| fish-pole bamboo, Golden bamboo | Phyllostachys aurea |
| Five-fingered maidenhair fern | Adiantum pedatum 'Imbricatum' |
| Flag iris, Sweet flag | Acorus calamus |
| Flame creeper | Tropaeolum speciosum |
| Flamingo flower, Tail flower, Laceleaf | Anthurium |
| Flamingo flower, Jack-in-the-pulpit, Scherzer's flamingo plant, Tail flower, Flame plant | Anthurium scherzerianum |
| Flannel bush, Flannelbush | Fremontodendron |
| Flat-leaf parsley, Italian parsley | Petroselinum crispum |
| Flat-leaf parsley | Petroselinum hortense |
| Flat-sedge | Blysmus compressus |
| Flat-stalked pondweed | Potamogeton friesii |
| Flattened Alexander's foot | Anacyclus pyrethrum |
| Flattened meadow grass | Poa compressa |
| Flax | Linum perenne |
| Flea sedge | Carex pulicaris |
| Fleebane | Erigeron |
| Floating bur reed | Sparganium angustifolium |
| Floating club rush | Eleogiton fluitans |
| Floating sweet-grass | Glyceria fluitans |
| Floating water-plantain | Luronium natans |
| Florists' cineraria | Pericallis x hybrida |
| Floss flower, Ageratum | Ageratum |
| Flower of the Incas | Alstroemeria |
| Flowering cherry | Prunus |
| Flowering cherry | Prunus incisa 'Kojo-no-mai' |
| Flowering currant | Ribes sanguineum 'King Edward VII' |
| Flowering dogwood, American box | Cornus florida |
| Flowering rush | Butomus umbellatus |
| Fly orchid | Ophrys insectifera |
| Foam flower | Tiarella cordifolia |
| Forget-me-not | Myosotis |
| Forget-me-not | Myosotis palustris |
| Forget-me-not | Myosotis sylvatica |
| Forrest's Taiwan pieris | Pieris formosa var. forrestii |
| Forsythia | Forsythia |
| Forsythia | Forsythia x intermedia |
| Forsythia | Forsythia x intermedia 'Spring Glory' |
| Forsythia | Forsythia suspensa |
| Fox and cubs | Pilosella aurantiaca |
| Foxglove | Digitalis |
| Foxglove | Digitalis ambigua |
| Foxglove | Digitalis grandiflora |
| Foxglove | Digitalis purperea |
| Foxglove | Digitalis purperea Excelsior hybrids |
| Foxglove | Digitalis purpurea |
| Foxglove tree, Princess tree | Paulownia tomentosa |
| Foxtail barley | Hordeum jubatum |
| Foxtail lilies | Eremurus |
| Foxtail Lily, King's spear | Eremurus robustus |
| Fragrant orchid | Gymnadenia conopsea |
| Frangipani | Plumeria |
| French bean | Phaseolus vulgaris |
| French bean, Dwarf French bean | Phaseolus vulgaris |
| French bean, Fine bean | Phaseolus vulgaris |
| French Lavender, Lavender | Lavandula |
| French lavender | Lavandula stoechas |
| French lavender | Lavandula 'Anouk' |
| French marigold | Tagetes patula |
| French oat grass | Gaudinia fragilis |
| French tarragon | Artemisia dracunculus var. sativa |
| Fringecups | Tellima grandiflora |
| Fringed lavender | Lavandula dentate |
| Fringed lavender (green form) | Lavandula dentata |
| Fringed lavender (Silver form) | Lavandula dentata |
| Fringed lavender, French lavender | Lavandula dentate |
| Fritillary | Fritillaria persica |
| Frog orchid | Coeloglossum viride |
| Frog rush | Juncus ambiguus |
| Frogbit | Hydrocharis morsus-ranae |
| Fuchsia | Fuchsia |
| Fuchsia | Fuchsia magellanica |
| Fuchsia, Lady's eardrops | Fuchsia magellanica 'Riccartonii' |
| Fuchsia | Fuchsia 'California Dreamers&'reg; |
| Fukien tea tree | Carmona microphylla |
| Full moon maple | Acer japonicum 'Vitifolium' |
| Full moon maple, Japanese maple | Acer shirasawanum |
| Full moon maple, Japanese maple, Golden Shirasawa maple | Acer shirasawanum 'Aureum' |
| Full moon maple, Japanese maple, Shirasawa maple 'Autumn Moon' | Acer shirasawanum 'Autumn Moon' |
| Galingale | Cyperus longus |
| Garden dewberry | Rubus aboriginum |
| Garden strawberry | Fragaria x ananassa |
| Garden tulip | Tulipa gesneriana |
| Gardenia | Gardenia |
| Garland flower, Rose daphne, Sweet-scented daphne | Daphne cneorum |
| Garlic | Allium sativum |
| Garlic | Allium sativum 'Thermidrome' |
| Garlic mustard | Sisymbrium alliaria |
| Gay feathers | Liatris spicata |
| Gay feathers | Liatris spicata 'Kobold' |
| Gazania | Gazania 'Kiss' |
| Gentian | Gentiana |
| Geranium | Geranium 'Ann Folkard' |
| Geranium | Geranium |
| Geranium | Geranium clarkei |
| Geranium | Geranium endressii |
| Geranium | Geranium phaeum |
| Geranium | Pelargonium |
| Geranium | Pelargonium 'White Boar' |
| Geranium | Geranium 'Blue Sybil' |
| Geranium, Pelargonium | Pelargonium peltatum |
| German chamomile, Chamomile, camomile, Wild chamomile | Matricaria chamomilla |
| German chamomile, Chamomile, camomile, Wild chamomile | Matricaria recutita |
| Germander | Teucrium fruticans |
| Geum | Geum |
| Ghost berry | Rubus thibetanus |
| Ghost orchid | Epipogium aphyllum |
| Giant coneflower | Rudbeckia maxima |
| Giant cowslip | Primula florindae |
| Giant fennel | Ferula communis |
| Giant fescue | Festuca gigantea |
| Giant hogweed | Heracleum mantegazzianum |
| Giant honeysuckle | Lonicera hildebrandiana |
| Giant meadow saffron | Colchicum speciosum |
| Giant montbretia | Crocosmia masoniorum |
| Giant pignut | Bunium bulbocastanum |
| Giant reed, Spanish reed | Arundo donax |
| Giant stipas | Stipa |
| Ginger lily, Ornamental ginger, Gingerlily | Hedychium |
| Ginger mint | Mentha x gentilis |
| Ginger mint | Mentha x gracilis |
| Gingerlily, Ornamental ginger, Ginger lily | Hedychium coccineum 'Tara' |
| Gladioli | Gladiolus |
| Gladioli | Gladiolus communis |
| Gladioli | Gladiolus papilio 'David Hills’ |
| Gladioli | Gladiolus papilio 'Ruby’ |
| Glaucous meadow grass | Poa glauca |
| Glaucous sedge | Carex flacca |
| Globe artichoke | Cynara scolymus |
| Globe artichoke, Artichoke | Cynara scolymus 'Green Globe' |
| Globe thistle | Echinops sphaerocephalus |
| Globeflower | Trollius |
| Globeflower | Trollius chinensis |
| Globeflower | Trollius x cultorum |
| Glory bush | Tibouchina urvilleana |
| Glory lily | Gloriosa superba |
| Glory-of-the-snow | Chionodoxa forbesii |
| Glory-of-the-snow | Chionodoxa luciliae |
| Goat's beard | Aruncus dioicus |
| Goat's rue | Galega |
| Goats rue | Galega officinalis |
| Godetia | Clarkia |
| Gold orache | Atriplex hortensis |
| Gold tipped marjoram | Origanum vulgare |
| Gold-edged blue plantain lily | Hosta ventricosa 'Aureomarginata' |
| Golden Alexander | Zizea aurea |
| Golden Alyssum, rock madwort, golden tuft, gold basket, basket of gold | Aurinia saxatilis |
| Golden cat grass, Golden oats | Stipa gigantea |
| Golden Chinese timber bamboo | Phyllostachys vivax f. aureocaulis |
| Golden crocus | Crocus chrysanthus |
| Golden fescue, Blue fescue | Festuca |
| Golden greater knapweed | Centaurea macroephala |
| Golden hop | Humulus lupulus |
| Golden kingcups | Caltha palustris |
| Golden majoram | Origanum aurreum |
| Golden male fern | Dryopteris affinis |
| Golden poplar | Populus x serotina |
| Golden purslane | Portulaca oleracea |
| Golden Queen Holly | Ilex aquifolium 'Golden Queen' |
| Golden Queen Holly | Ilex aquifolium 'Aurea Regina' |
| Golden Rain, Voss's laburnum | Laburnum x watereri |
| Golden rain tree | Koelreuteria paniculata |
| Golden rod | Solidago 'Crown of Rays' |
| Golden rod | Solidago 'Linner Gold' |
| Golden sage | Salvia aurea |
| golden twig dogwood | Cornus sericea 'Flaviramea' |
| Golden yew | Taxus baccata |
| Goldencup St John's wort | Hypericum patulum |
| Goldenrods | Solidago |
| Goldenrods | Solidago 'Goldenmosa' |
| Good King Henry, Poor-man's asparagus, Perennial goosefoot | Chenopodium bonus-henricus |
| Gooseberry | Ribes uva-crispa |
| Gorse, Common gorse, Furze | Ulex europaeus |
| Grape | Vitis vinifera |
| Grape hyacinth, Blue muscari | Muscari armenaicum |
| Grape hyacinth | Muscari neglectum |
| Grape, Grape vine | Vitis vinifera |
| Grass-leaved iris, Plum tart iris | Iris graminea |
| Grass-wrack pondweed | Potamogeton compressus |
| Great brome | Bromus diandra |
| Great fen sedge, Saw sedge | Cladium mariscus |
| Great mullein | Verbascum thapsus |
| Great soft rush | Juncus pallidus |
| Great sundew | Drosera anglica |
| Great thrift | Armeria pseudarmeria 'Formosa' |
| Great thrift | Armeria formosa |
| Great white cherry | Prunus |
| Greater butterfly orchid | Platanthera chlorantha |
| Greater celandine | Chelidonium majus |
| Greater duckweed | Spirodela polyrhiza |
| Greater knapweed | Centaurea scabiosa |
| Greater musk mallow, Hollyhock mallow, Vervain mallow | Malva alcea |
| Greater periwinkle, Quarter | Vinca major |
| Greater pond sedge, Sedge | Carex riparia |
| Greater quaking-grass | Briza maxima |
| Greater red-hot poker | Kniphofia praecox |
| Greater snowdrop | Galanthus elwesii |
| Greater stitchwort | Stellaria holostea |
| Greater tussock sedge | Carex paniculata |
| Greater wood rush | Luzula maxima |
| Greater wood rush | Luzula sylvatica |
| Greater woodrush | Luzula sylvatica |
| Greek basil, Bush basil, Basil | Ocimum minimum |
| Greek squill | Scilla messeniaca |
| Green alkanet | Pentaglottis sempervirens |
| Green bristle grass | Setaria viridis |
| Green lavender | Lavandula viridis |
| Green mountain sugar maple | Acer saccharinum 'Green Mountain' |
| Green winged orchid | Orchis morio |
| Green-flowered helleborine | Epipactis phyllanthes |
| Green-ribbed sedge | Carex binervis |
| Greengage | Prunus domestica |
| Grey club rush | Schoenoplectus tabernaemontani |
| Grey hair grass | Corynephorus canescens |
| Grey sage brush | Atriplex halimus |
| Grey sedge | Carex divulsa |
| Grey willow | Salix cinerea |
| Guatemalan leaf sage | Salvia cacaliifolia |
| Guelder rose | Viburnum opulus |
| Guensey lily, Bowden Cornish lily | Nerine bowdenii |
| Guernsey lily, Jersey lily | Nerine |
| Guernsey lily | Nerine sarniensis |
| Gum tree, Ironbark | Eucalyptus |
| Gunnera | Gunnera |
| Gypsywort | Lycopus europaeus |
| Hair sedge | Carex capillaris |
| Hairlike pondweed | Potamogeton trichoides |
| Hairy bamboo | Sasaella ramosa |
| Hairy brome | Bromopsis ramosa |
| Hairy garlic | Allium subhirsutum |
| Hairy rock rose, Hoary rock-rose, Cretan rockrose | Cistus creticus |
| Hairy sedge | Carex hirta |
| Hairy wood rush | Luzula pilosa |
| Hanging basket sweet pea | Lathyrus 'Sugar 'n' Spice' |
| Hard fern | Blechnum spicant |
| Hard fescue | Festuca brevipila |
| Hard grass | Parapholis strigosa |
| Hard rush | Juncus inflexus |
| Hardy blue-flowered leadwort | Ceratostigma plumbaginoides |
| Hardy fan palm, Dwarf fan palm, European fam palm | Chamaerops humilis |
| Hardy fuchsia | Fuchsia |
| Hardy fuchsia | Fuchsia magellanica |
| Hardy geranium | Geranium 'Sirak' |
| Hardy geranium | Geranium 'Nimbus' |
| Hare's-foot sedge | Carex lachenalii |
| Hare's-tail Cottongrass | Eriophorum vaginatum |
| Hare's-tail grass | Lagurus ovatus |
| Hari grass | Koeleria |
| Hart's-tongue fern | Asplenium scolopendrium |
| Hattie's pincushion, Masterwort | Astrantia |
| Hattie's pincushion, Masterwort | Astrantia major |
| Hawkweed | Hieracium |
| Hawkweed oxtongue, Hawkweed | Picris hieracioides |
| Hazel | Corylus |
| Hazel | Corylus avellana |
| Hazel, Cobnut | Corylus avellana |
| Hazelnut | Corylus avellana |
| Heart-leaved houttuvnia | Houttuynia cordata |
| Heart-leaved houttuvnia | Houttuynia cordata 'Tricolor' |
| Heartsease | Viola tricolor |
| Heath grass, Common heath grass | Danthonia decumbens |
| Heath rush | Juncus squarrosus |
| Heath spotted orchid | Dactylorhiza maculata |
| Heath wood rush | Luzula multiflora |
| Heather, Common heather, Ling heather | Calluna vulgaris |
| Hebe | Hebe |
| Hebe | Hebe albicans |
| Hebe | Hebe parviflora |
| Hebe | Hebe pinguifolia 'Pagei' |
| Hebe | Hebe rakaiensis |
| Helen's flower | Helenium 'Dunkelpracht' |
| Helichrysum | Helichrysum petiolare |
| Hellebore, Lenten rose | Helleborus x hybridus |
| Hemlock, Poison hemlock | Conium maculatum |
| Hemlock, water dropwort, Water hemlock, Dead man's fingers | Oenanthe crocata |
| Henbane | Hyoscyamus niger |
| Herb bennet | Geum urbanum |
| Herb paris | Paris polyphylla |
| Herb paris | Paris quadrifolia |
| Hibiscus | Hibiscus |
| Hickory | Carya |
| Highland bent | Agrostis castellana |
| Himalayan balsam | Impatiens glandulifera |
| Himalayan birch | Betula utilis |
| Himalayan honeysuckle, Pheasent berry | Leycesteria formosa |
| Hoary willow | Salix elaeagnos |
| Hogweed | Heracleum |
| Holly | Ilex |
| Holly | Ilex 'Golden Queen' |
| Holly | Ilex 'J.C. van Tol' |
| Holly | Ilex x altaclerensis |
| Holly, Common holly | Ilex aquifolium |
| Holly | Ilex aquifolium 'J.C. van Tol' |
| Holly | Ilex aquifolium 'Polycarpa' |
| Holly leaved naiad | Najas marina |
| Holly-leaved barberry | Mahonia aquifolium |
| Hollyhock | Alcea rosea 'Charter's Double' |
| Hollyhock | Alcea rosea 'Nigra' |
| Holy grass | Hierochloe odorata |
| Honesty | Lunaria annua |
| Honesty | Lunaria annua 'Corfu Blue' |
| Honey bush | Melianthus major |
| Honey spurge | Euphorbia mellifera |
| Honeybells | Nothoscordum borbonicum |
| Honeysuckle | Lonicera |
| Honeysuckle, Wild honeysuckle, Common honeysuckle, Woodbine | Lonicera periclymenum |
| Hoop petticoat daffodil | Narcissus bulbocodium |
| Hop | Humulus lupulus |
| Horehound | Marrubium vulgare |
| Hornbeam | Carpinus betulus 'Fastigiata' |
| Hornbeam | Carpinus betulus |
| Hornbeam, Common hornbeam, Horse beech | Carpinus betulus |
| Horned pondweed | Zannichellia palustris |
| Hornwort | Ceratophyllum demersum |
| Horse chestnut, Conker tree | Aesculus hippocastanum |
| Horseradish | Armoracia |
| Horseradish | Armoracia rusticana |
| Horsetail | Equisetum hyemale |
| Hosta, Funkia, Plantain lily | Hosta |
| Hosta, Funkia, Plantain lily | Hosta sieboldiana 'Blue Angel' |
| Hosta | Hosta fortunei 'Francee' |
| Hosta, Funkia, Plantain lily | Hosta tardiana |
| Hosta, Funkia, Plantain lily | Hosta 'Patriot' |
| Hosta, Gold edged plantain lily | Hosta fortunei |
| Hosta, Wavy plantain lily | Hosta undulata var. undulata |
| Hosta | Hosta venusta |
| Hosta | Hosta 'Christmas Tree' |
| Hosta | Hosta tardiana 'El Niño' |
| Hosta | Hosta 'Fire Island' |
| Hosta | Hosta 'Golden Tiara' |
| Hosta | Hosta tardiana 'June' |
| Hosta | Hosta 'Krossa Regal' |
| Hosta | Hosta 'Liberty' |
| Hosta | Hosta 'Orange Marmalade' |
| Hosta | Hosta 'Paradise Puppet' |
| Hosta | Hosta 'Praying Hands' |
| Hosta | Hosta 'Revolution' |
| Hosta | Hosta 'Sagae' |
| Hosta | Hosta 'Shining Tot' |
| Hosta | Hosta 'Stained Glass' |
| Hosta | Hosta 'Touch of Class' |
| Hosta | Hosta fortunei var. aureomarginata |
| Hosta | Hosta plantaginea var. japonica |
| Hosta | Hosta ventricosa |
| Hosta | Hosta 'Blue Cadet' |
| Hosta | Hosta 'Silver Crown' |
| Hosta | Hosta 'Loyalist' |
| Hosta | Hosta 'Blue Wedgewood' |
| Hosta | Hosta 'Gold Edgar' |
| Hosta | Hosta 'Fire and Ice' |
| Hosta | Hosta 'June' |
| Houseleek | Sempervivum textorum |
| Houseleek, Hens and chicks | Sempervivum |
| Hungarian brome | Bromopsis inermis |
| Huntingdom elm, Dutch elm, Chichester elm | Ulmus x hollandica |
| Huon's fescue | Festuca huonii |
| Hyacinth | Hyacinthus orientalis |
| Hyacinth lilac | Syringa hyacinthiflora |
| Hybrid rock rose | Cistus x hybridus |
| Hybrid rock rose | Cistus x hybridus var. corbariensis |
| Hydrangea | Hydrangea |
| Hydrangea, Comon hydrangea, Mophead hydrandea, Hortensias | Hydrangea macrophyllia |
| Hypoestes, Polka-dot plant, Baby's tears, Freckle face | Hypoestes phyllostachya |
| Ice plant | Sedum spectabile |
| Incense cedar, California incense cedar | Calocedrus decurrens |
| Indian bean tree | Catalpa bignonioides |
| Indian horse chestnut | Aesculus indica |
| Indian mallow | Abutilon |
| Indian mallow | Abutilon x suntense |
| Indian shot plant, African arrowroot | Canna indica |
| Interrupted brome | Bromus interruptus |
| Iris | Iris |
| Iris | Iris florentina |
| Iris | Iris germanica |
| Iris, Yellow flag iris | Iris pseudacorus |
| Iris | Iris reticulata |
| Iris | Iris sibirica |
| Iris | Iris stylosa |
| Irish ivy | Hedera helix |
| Irish ivy | Hedera hibernica |
| Irish lady's tresses | Spiranthes romanzoffiana |
| Irish yew | Taxus baccata |
| Italian beetroot, Beetroot, Garden beet | Beta vulgaris |
| Italian Bluebell | Hyacinthoides italica |
| Italian buckthorn | Rhamnus alaternus |
| Italian chicory, Radicchio, Red chicory, Leaf chicory | Cichorium intybus 'Palla Rossa' |
| Italian cypress, Cypress | Cupressus sempervirens |
| Italian garlic | Allium pendulinum |
| Italian honeysuckle, Perfoliate honeysuckle | Lonicera caprifolium |
| Italian Lords and Ladies, Cuckoo pint | Arum italicum |
| Italian ryegrass | Lolium multiflorum |
| Itoh peony, Paeony | Paeonia 'Court Jester' |
| Itoh peony, Paeony | Paeonia 'Garden Treasure' |
| Ivy, Canary Island ivy, Variegated ivy | Hedera canariensis 'Variegata' |
| Ivy, Persian ivy | Hedera colchica |
| Ivy | Hedera helix |
| Ivy leafed cyclamen, Neapolitan cyclamen, sowbread | Cyclamen hederifolium |
| Ivy-leafed geranium, Trailing geranium | Pelargonium peltatum |
| Ivy-leafed toadflax, Pennywort | Linaria Cymbalaria |
| Ivy-leaved duckweed | Lemna triscula |
| Ivy-leaved toadflax | Cymbalaria muralis |
| Jacob's ladder | Polemonium |
| Jacob's ladder | Polymonium caeruleum |
| Japanese anemone, Windflower | Anemone x hybrida |
| Japanese azalea | Azalea japonica |
| Japanese Basil | Perilla frutescens |
| Japanese blood grass | Imperata cylindrica |
| Japanese euonymus | Euonymus japonicus |
| Japanese flowering crab apple, Purple chokeberry, Showy crab apple | Malus x floribunda |
| Japanese holly | Ilex crenata DARK GREEN ('Icoprins11' PBR) |
| Japanese honeysuckle | Lonicera japonica |
| Japanese iris | Iris ensata |
| Japanese knotweed, Giant knotweed | Fallopia japonica |
| Japanese knotweed, Giant knotweed | Reynoutria japonica |
| Japanese larch | Larix kaempferi |
| Japanese laurel | Aucuba japonica 'Rozannie' |
| Japanese maple | Acer palmatum |
| Japanese maple | Acer palmatum 'Atropurpureum' |
| Japanese maple | Acer palmatum 'Bloodgood' |
| Japanese maple | Acer palmatum 'Dissectum' |
| Japanese maple | Acer palmatum 'Dissectum Atropurpureum' |
| Japanese maple | Acer palmatum 'Dissectum Garnet' |
| Japanese maple | Acer palmatum 'Garnet' |
| Japanese maple | Acer palmatum 'Koto-no-ito' |
| Japanese maple | Acer palmatum 'Linearilobum' |
| Japanese maple | Acer palmatum 'Osakazuki' |
| Japanese maple | Acer palmatum 'Palmatifidum' |
| Japanese maple | Acer palmatum 'Red Pygmy' |
| Japanese maple | Acer palmatum 'Seiryu' |
| Japanese maple | Acer palmatum 'Shin-deshojo' |
| Japanese maple | Acer palmatum 'Cinnabarinum' |
| Japanese maple | Acer palmatum 'Firecracker' |
| Japanese mock orange | Pittosporum tobira |
| Japanese painted fern | Athyrium niponicum |
| Japanese parsley | Cryptotaenia japonica |
| Japanese parsley, Mitsuba, Chinese celery | Oenanthe javanica |
| Japanese plum | Prunus salicina |
| Japanese primula | Primula sieboldii |
| Japanese quince, Flowering quince | Chaenomeles x superba |
| Japanese quince, Maule's quince, Japonica | Chaenomeles japonica |
| Japanese sedge | Carex oshimensis |
| Japanese skimmia | Skimmia japonica |
| Japanese snowball | Viburnum plicatum 'Pink Beauty' |
| Japanese snowball bush | Viburnum plicatum |
| Japanese spotted laurel, Spotted laurel | Aucuba japonica |
| Japanese tree lilac | Syringa reticulata |
| Japanese white pine | Pinus parviflora |
| Japanese wineberry | Rubus phoenicolasius |
| Jasmine, Jessamine, Common jasmine | Jasminum officinale |
| Jerusalem artichoke, Artichoke | Helianthus tuberosus |
| Jew's Mantle, Japanese rose, Japanese kerria | Kerria japonica |
| Joe-pye weed | Eupatorium maculatum Atropurpureum Group |
| Johnson grass | Sorghum halepense |
| Jointed rush | Juncus articulatus |
| Judas tree, Redbud | Cercis siliquastrum |
| Juniper | Juniperus communis |
| Kaffir lily, coccinea | Schizostylis coccinea |
| Kaffir lily, Scarlet river lily, Crimson flag | Hesperantha coccinea |
| Kale | Brassica oleracea |
| Kale, Tuscan cabbage, Tuscan kale, Black cabbage | Brassica oleracea |
| Kamuro-zasa, Evergreen bamboo, dwarf bamboo | Pleioblastus viridistriatus |
| Katsura | Cercidiphyllum japonicum |
| Keeled garlic | Allium carinatum |
| Kentia palm | Howea forsteriana |
| Kerry lily | Simethis planifolia |
| Kidney vetch | Anthyllis vulneraria |
| King Solomon's seal, Solomon's seal | Polygonatum |
| Kiwi fruit | Actinidia deliciosa |
| Knapweed | Centaurea centaurium |
| Knotweed | Persicaria amplexicaulis |
| Knotweed | Persicaria microcephala |
| Knotweed | Polygonum |
| Knotweed | Polygonum affine |
| Kohl rabi | Brassica oleracea |
| Korean mint | Agastache pallida x rugosa 'Globetrotter' |
| Korean rock fern | Polystichum tsussimense |
| Kotschy's crocus | Crocus kotschyanus |
| Kowhai | Sophora |
| Lady fern | Athyrium filix-femina |
| Lady garlic | Allium scorodoprasum |
| Lady orchid | Orchis purpurea |
| Lady's mantle | Alchemilla |
| Lady's mantle | Alchemilla mollis |
| Lady's mantle | Alchemilla vulgaris |
| Lady's slipper orchid | Cypripedium calceolus |
| Lady's smock, Cuckoo flower | Cardamine pratensis |
| Lapland marsh orchid | Dactylorhiza lapponica |
| Larch | Larix decidua |
| Large yellow sedge | Carex flava |
| Large-flowered waterweed | Egeria densa |
| Large-leaved lime | Tilia platyphyllos |
| Larkspur | Consolida |
| Late Dutch honeysuckle, Dutch honeysuckle | Lonicera periclymenum 'Serotina' |
| Late spider orchid | Ophrys fuciflora |
| Laurel | Laurus |
| Lavatera | Lavatera thuringiaca |
| Lavender | Lavandula |
| Lavender, English lavender | Lavandula angustifolia |
| Lavender, English lavender | Lavandula x intermedia |
| Lavender | Lavandula stoechas 'Helmsdale' |
| Lawson cypress | Chamaecyparis lawsoniana |
| Leadwort, Plumbago | Ceratostigma |
| Leafy rush | Juncus foliosus |
| Least bur reed | Sparganium natans |
| Least duckweed | Lemna minuta |
| Leatherleaf sedge | Carex buchananii |
| Lebanese oak | Quercus libani |
| Leek | Allium ampeloprasum |
| Leek | Allium ampeloprasum 'Musselburgh' |
| Leek | Allium porrum |
| Leek | Allium ampeloprasum 'Neptune' |
| Lemon | Citrus limon |
| Lemon | Citrus limon 'Imperial' |
| Lemon balm | Melissa officinalis |
| Lemon beebrush | Lippia citriodora |
| Lemon grass, West Indian lemon grass, lemongrass | Cymbopogon citratus |
| Lemon mint | Mentha |
| Lemon mint, Lemon beebalm | Monarda citriodora |
| Lemon thyme, Thyme | Thymus x citriodorus |
| Lemon verbena | Aloysia citrodor |
| Lemon verbena | Aloysia triphylla |
| Lenten rose | Helleborus orientalis |
| Leopard's bane | Doronicum |
| Leopard's bane | Doronicum orientale |
| Lesser bulrush | Typha angustifolia |
| Lesser butterfly orchid | Platanthera bifolia |
| Lesser Canary grass | Phalaris minor |
| Lesser celandine, Pilewort, fig buttercup, woodland buttercup | Ficaria verna subsp. verna |
| Lesser celandine | Ranunculus ficaria |
| Lesser Chilean iris | Libertia elegans |
| Lesser glory-of-the-snow | Chionodoxa sardensis |
| Lesser hairy brome | Bromopsis benekenii |
| Lesser New Zealand flax | Phormium cookianum |
| Lesser periwinkle | Vinca minor |
| Lesser periwinkle | Vinca minor 'Variegata' |
| Lesser periwinkle | Vinca minor 'Argenteovariegata' |
| Lesser periwinkle, White periwinkle | Vinca minor f. alba 'Gertrude Jekyll' |
| Lesser pond sedge | Carex acutiformis |
| Lesser pondweed | Potamogeton pusillus |
| Lesser quaking-grass | Briza minor |
| Lesser tussock sedge | Carex diandra |
| Lesser twayblade | Listera cordata |
| Lesser water plantain | Baldellia ranunculoides |
| Lettuce | Lactuca sativa |
| Lettuce | Lactuca sativa var. longifolia 'Little Gem' |
| Lettuce | Lactuca sativa var. longifolia 'Winter Density' |
| Lettuce | Lactuca sativa 'Lollo Rossa' |
| Leylandii, Leyland cypress, Cypress | x Cupressocyparis leylandii |
| Lilac | Syringa |
| Lilac | Syringa meyeri |
| Lilac hibiscus | Alyogyne huegelii |
| Lily | Lilium |
| Lily | Lilium 'Amazing' |
| Lily | Lilium 'Colour Parade' |
| Lily of the valley | Helleborus corsicus |
| Lily, Madonna lily | Lilium candidum |
| Lily-of-the-Nile, Calla lily, Arum lily, Altar lily | Zantedeschia aethiopica |
| Lily-of-the-valley | Convallaria |
| Lily-of-the-valley | Convallaria majalis |
| Lilyturf | Liriope muscari |
| Lime | Tilia x europaea |
| Lime mint | Mentha |
| Lime, Linden | Tilia |
| Liquorice | Glycyrriza glabra |
| Lizard orchid | Himantoglossum hircinum |
| Lobelia | Lobelia |
| Lobelia | Lobelia x gerardii |
| Loddon pondweed | Potamogeton nodosus |
| Loganberry | Rubus x loganbaccus thornless |
| London plane | Platanus x acerifolia |
| London pride, St Patrick's cabbage, Whimsey | Saxifraga x urbium |
| Long yellow day lily, Citron daylily | Hemerocallis citrina |
| Long-bracted sedge | Carex extensa |
| Long-stalked pondweed | Potamogeton praelongus |
| Loose flowered orchid | Orchis laxiflora |
| Loose silkybent | Apera spica-venti |
| Loosestrife, Yellow loosestrife | Lysimachia |
| Loosestrife | Lysimachia atropurpurea |
| Loosestrife | Lysimachia ciliata |
| Loosestrife | Lysimachia ephemerum |
| Loosestrife | Lysimachia punctata |
| Loquat | Eriobotrya japonica |
| Lords and Ladies, Cuckoo pint | Arum italicum |
| Lords and Ladies, Jack in the pulpit, Cuckoo Pint | Arum maculatum |
| Lovage | Levisticum officinale |
| Love grass | Eragrostis |
| Love-in-a-mist | Nigella damascena |
| Lovegrass | Eragrostis |
| Lundy cabbage | Coincya wrightii |
| Lungwort | Pulmonaria |
| Lungwort | Pulmonaria saccharata |
| Lungwort | Pulmonaria angustifolia 'Blue Ensign' AGM |
| Lungwort, Soldiers and sailors, Jerusalem sage, Adam and Eve | Pulmonaria officinalis |
| Lupin | Lupinus |
| Lupin | Lupinus 'Tutti Frutti' |
| Lyme grass | Leymus arenarius |
| Macaw flower | Heliconia bihai |
| Madder | Rubia tinctorum |
| Magnolia | Magnolia campbelli |
| Magnolia | Magnolia x loebneri |
| Magnolia, Chinese magnolia, saucer magnolia | Magnolia x soulangeana |
| Magnolia | Magnolia wilsonii |
| Mahonia | Mahonia |
| Mahonia | Mahonia lomariifolia |
| Mahonia | Mahonia x media |
| Maidenhair fern, Delta maidenhair fern | Adiantum raddianum |
| Maidenhair spleenwort | Asplenium trichomanes |
| Male fern | Dryopteris filix-mas 'Barnesii' |
| Male fern, Fern | Dryopteris filix-mas |
| Mallow | Malva |
| Man orchid | Orchis anthropophorum |
| Mangel wurzel, Mangold | Beta vulgaris |
| Manna ash | Fraxinus ornus |
| Manuka, Tea-tree, New Zealand tea-tree | Leptospermum |
| Many-stalked spike rush | Eleocharis multicaulis |
| Maple | Acer |
| Mare's tail | Equisetum arvense |
| Mare's tail | Hippuris vulgaris |
| Marguerite | Argyranthemum |
| Marguerite, Paris daisy, Margauerite daisy | Argyranthemum frutescens |
| Marigold | Tagetes |
| Marigold | Tagetes zenith |
| Marigold, English marigold, Pot marigold | Calendula officinalis |
| marigold, Pot marigold | Calendula officinalis 'Indian Prince' |
| Marjoram | Origanum vulgare |
| Marram grass | Ammophila |
| Marrow, Courgette | Cucurbita pepo |
| Marrow, Courgette | Cucubita pepo |
| Marsh arrowgrass | Triglochin palustris |
| Marsh foxtail | Alopecurus geniculatus |
| Marsh helleborine | Epipactis palustris |
| Marsh marigold, Double kingcup | Caltha palustris 'Plena' |
| Marsh marigold, Double marsh marigold, Water buttercup | Caltha palustris |
| Marsh pea | Lathyrus palustris |
| Marshmallow | Althaea officinalis |
| Martagon lily | Lilium martagon |
| Mary's pigtail | Verbascum chaixii |
| Masterwort | Astrantia maxima |
| Mastic thyme | Thymus mastichina |
| Mat grass | Nardus stricta |
| Mat grass fescue | Vulpia unilateralis |
| May lily | Maianthemum bifolium |
| Meadow barley | Hordeum secalinum |
| Meadow brome | Bromus commutatus |
| Meadow buttercup | Ranunculus acris |
| Meadow cranesbill | Geranium pratense |
| Meadow fescue | Festuca pratensis |
| Meadow foxtail | Alopecurus pratensis |
| Meadow oat grass | Helictotrichon pratense |
| Meadow rue | Thalictrum |
| Meadow saffron, Autumn-flowering crocus, Naked ladies | Colchicum |
| Meadow saffron, Naked ladies | Colchicum autumnale |
| Meadow sage, Meadow clary | Salvia pratensis |
| Meadowsweet, Mead wort | Filipendula ulmaria |
| Medlar, Common medlar | Mespilus germanica |
| Melon | Cucumis melo |
| Mesembryanthemum | Mesembryanthemum |
| Mexican daisy | Erieron karvinskianus |
| Mexican fencepost cactus | Stenocereus marginatus |
| Mexican orange | Choisya x dewitteana WHITE DAZZLER ('Londaz') |
| Mexican orange blossom | Choisya ternata |
| Mexican paintbrush | Ageratum houstonianum |
| Mexican sunflower | Tithonia rotundifolia |
| Meyer lemon | Citrus x meyeri |
| Michaelmas daisy, Aster | Aster |
| Michaelmas daisy, Aster | Aster x frikartii 'Mönch' |
| Michaelmas daisy, Aster, New York aster | Aster novi-belgii |
| Midland hawthorn | Crataegus laevigata |
| Mile-a-minute, mile a minute, Asiatic tearthumb, devil's tail | Persicaria perfoliata |
| Military orchid | Orchis militaris |
| Milk parsley | Peucedanum palustre |
| Milk thistle | Silybum marianum |
| Milkweed | Euphorbia |
| Milkweed, Euphorbia, Spurge | Euphorbia palustris |
| Milkweed | Euphorbia polychroma |
| Miller abutilon | Abutilon x milleri |
| Millet | Pennisetum glaucum 'Purple Majesty' |
| Million bells | Calibrachoa |
| Mimosa | Acacia dealbata |
| Mimosa | Acacia dealbata 'Gaulois Astier' |
| Mint | Mentha |
| Miss Willmott's ghost, Asian sea holly | Eryngium giganteum |
| Mock orange | Philadelphus |
| Mock orange | Philadelphus coronarius |
| Molly the Witch, Mlokosewitch's peony, The golden peony | Paeonia daurica subsp. mlokosewitschii |
| Monach birch | Betula maximowicziana |
| Monkey flower | Mimulus |
| Monkey musk, Monkey flower | Mimulus |
| Monkey orchid | Orchis simia |
| Monkey puzzle tree, Chile pine | Araucaria araucana |
| Monkshood, Aconite, Wolfsbane | Aconitum napellus |
| Monterey pine | Pinus insignis |
| Monterey pine | Pinus radiata |
| Morello cherry | Prunus cerasus 'Morello' |
| Morello cherry, Sour cherry, Tart cherry | Prunus cerasus |
| Morning glory | Ipomoea |
| Morning glory | Ipomoea x imperialis |
| Morning glory | Ipomoea tricolor |
| Morning glory, Convolvulus | Ipomoea |
| Moroccan mint | Mentha spicata var. crispa 'Moroccan', Moroccan mint |
| Moschatel, Mushroot | Adoxa moschatellina |
| Moth orchid | Phalaenopsis |
| Mother of God's plant | Salvia nemorosa |
| Motherwort | Leonurus cardiaca |
| Mountain ash, Rowan, Sorbus | Sorbus aucuparia |
| Mountain avens | Dryas octopetala |
| Mountain bog sedge | Carex rariflora |
| Mountain melick | Melica nutans |
| Mountain pine, Dwarf pine | Pinus mugo |
| Mourning widow, Hardy geranium, The mourning widow | Geranium phaeum |
| Mouse tail plant | Arisarum proboscideuim |
| Mouse-ear hawkweed | Hieracium pilosella |
| Moutan peony, Moutan, Tree peony, Japanese tree peony, Paeony | Paeonia x suffruticosa |
| Mugwort | Artemisia vulgaris |
| Mulberry | Morus |
| Mullein | Verbascum |
| Mullein | Verbascum olympicum |
| Musk mallow | Malva moschata |
| Musk orchid | Herminium monorchis |
| Musk rose | Rosa moschata |
| Myrobalan plum, Cherry plum, Plum | Prunus cerasifera |
| Myrtle | Myrtus |
| Myrtle (small leaf) | Myrtus tarentina |
| Narrow small-reed | Calamagrostis stricta |
| Narrow-leaved arrowhead | Sagittaria subulata |
| Narrow-leaved eelgrass | Zostera angustifolia |
| Narrow-leaved helleborine | Cephalanthera longifolia |
| Narrow-leaved marsh orchid | Dactylorhiza traunsteineri |
| Narrow-leaved meadow grass | Poa angustifolia |
| Narrow-leaved sage | Salvia lavandulifolia |
| Narrow-leaved water plantain | Alisma lanceolatum |
| Narrow-lipped helleborine | Epipactis leptochila |
| Nasturtium | Tropaeolum |
| Navelwort | Omphalodes cappadocica |
| Neapolitan garlic | Allium neapolitanum |
| Nectarine | Prunus persica |
| Needle grass, Esparto, Esparto grass, Halfah grass, Alfa grass | Stipa tenacissima |
| Needle spike rush | Eleocharis acicularis |
| Nemesia | Nemesia |
| Nettle tree | Celtis |
| Nettle-leaved goosefoot | Chenopodium murale |
| New Zealand bur | Acaena microphylla |
| New Zealand flax | Phormium |
| New Zealand flax | Phormium tenax |
| New Zealand sedge | Carex testacea |
| Nicotiana, Tobacco plant | Nicotiana |
| Night-scented stock | Matthiola bicornis |
| Nit grass | Gastridium ventricosum |
| Nitbone, Blue comfrey | Symphytum caucasicum |
| Nordmann fir, Caucasian fir | Abies nordmanniana |
| Normandy sorrel, Buckler-leaved sorrel | Rumex scutatus |
| North American daisy, Rudbeckia, Coneflower | Echinacea purpurea |
| Northern marsh orchid | Dactylorhiza purpurella |
| Northern spike rush | Eleocharis austriaca |
| Norway maple | Acer platanoides |
| Norway maple, Red maple, Soft maple | Acer platanoides f. rubrum |
| Norway maple, Red maple, Soft maple | Acer platanoides 'Rubrum' |
| Norway spruce, Common spruce | Picea abies |
| Norway spruce, Common spruce | Picea abies |
| Nuttall's waterweed | Elodea nuttallii |
| Oak, English oak, Common oak, pedunculate oak, European oak | Quercus robur |
| Oat | Avena sativa |
| Obovate peony, Mountain peony | Paeonia obovata |
| Old lady | Artemisia borealis |
| Old man cactus | Cephalocereus senilis |
| Old Man's beard | Clematis vitalba |
| Onion | Allium |
| Onion, Ornamental onion | Allium 'Globemaster' |
| Onion, Spring onion, salad onion, scallion | Allium cepa |
| Onion | Allium cepa 'Japanese Buffalo' F1 hybrid |
| Oniongrass | Romulea rosea |
| Ontario poplar | Populus x candicans |
| Opposite-leaved pondweed | Groenlandia densa |
| Orange birch bolete | Leccinum versipelle |
| Orange Mint, Eau De Cologne Mint | Mentha x piperita |
| Orange peel plant, Rainbow plant, Fish mint, Fish leaf | Houttuynia cordata |
| Orange scented thyme | Thymus fragrantissimus |
| Orange, Sweet orange, Valencia orange | Citrus |
| Orchid | Dendrobium |
| Orchid | Oncidium |
| Orchid | Orchidaceae |
| Orchid | Pleione |
| Orchid | Vanda |
| Oregano, Majoram, Wild marjoram | Origanum vulgare |
| Oriental poppy, Poppy | Papaver orientale |
| Ornamental blackberry | Rubus biflorus |
| Ornamental kiwi fruit, Variegated-leaf hardy kiwi | Actinidia kolomikta |
| Ornamental maize, Sweet corn, Sweetcorn | Zea mays |
| Ornamental onion | Allium hollandicum 'Purple sensation' |
| Ornamental onion | Allium vineale |
| Ornamental pear | Pyrus calleryana |
| Ornamental pepper, Capsicum | Capsicum annuum 'Holiday Cheer' |
| Ornamental quince | Chaenomeles speciosa |
| Ornamental quince, Chinese flowering quince, Japonica | Chaenomeles speciosa |
| Ornamental raspberry, Thimbleberry | Rubus odoratus |
| Ornamental winter kale | Brassica oleracea |
| Osage orange, horse apple, monkey ball, hedge apple tree | Maclura pomifera |
| Oshima cherry | Prunus speciosa |
| Osier, Common osier | Salix viminalis |
| Oval leaf privet, Privet | Ligustrum ovalifolium |
| Oval sedge | Carex ovalis |
| Ox eye daisy | Chrysanthemum leucanthemum |
| Ox-eye daisy | Leucanthemum vulgare |
| Oxlip | Primula elatior |
| Pacific bent grass, Blown-grass, New Zealand wind grass | Agrostis avenacea |
| Pagoda primrose | Primula vialii |
| Painted sage | Salvia horminum |
| Painted sage | Salvia viridis |
| Pak choi | Brassica rapa |
| Pale galingale | Cyperus eragrostis |
| Pale sedge | Carex pallescens |
| Pale St John's wort | Hypericum montanum |
| Pale yellow-eyed grass | Sisyrinchium striatum |
| Palm | Ptychosperma |
| Palm | Trachycarpus |
| Pampas grass | Cortaderia selloana |
| Pampas grass | Cortaderia selloana SILVER FEATHER ('Notcort') |
| Pansy | Viola |
| Pansy | Viola x wittrockiana |
| Pansy orchid | Miltonia |
| Paper bark cherry | Prunus serrula |
| Paper white daffodil | Narcissus papyraceus |
| Papillon or butterfly lavender | Lavandula stoechas |
| Papyrus, Indian matting plant, Papyrus sedge, Paper reed, Nile grass | Cyperus papyrus |
| Parsley | Petroselinum |
| Parsnip | Pastinaca sativa |
| Pasque flower | Pulsatilla vulgaris |
| Passion flower | Passiflora |
| Passion flower | Passiflora caerulea |
| Pea, Garden pea | Pisum sativum |
| Pea tree, Siberian pea shrub | Caragana arborescens |
| Peace lily | Spathiphyllum |
| Peach | Prunus persica |
| Pear | Pyrus communis |
| Pear | Pyrus communis 'Beech Hill' |
| Pear | Pyrus communis 'Concorde' |
| Pear | Pyrus communis 'Conference' |
| Pear | Pyrus communis 'Louise Bonne de Jersey' |
| Pear | Pyrus communis 'Williams' Bon Chretien' |
| Pear | Pyrus communis 'Comice' |
| Pearl Bush | Exochorda x macrantha |
| Pearl millet | Pennisetum glaucum |
| Pendulous sedge | Carex pendula |
| Pennyroyal, Mint | Mentha pulegium |
| Penstemon | Penstemon |
| Penstemon | Penstemon 'Amelia Jane' (Pensham Series) |
| Penstemon | Penstemon 'Blackbird' (Bird Series) |
| Penstemon | Penstemon 'King George V' |
| Penstemon | Penstemon 'Laura' |
| Penstemon | Penstemon 'Strawberries & Cream' (Ice Cream Series) |
| Penstemon | Penstemon davidsonii |
| Penstemon | Penstemon fruticosus |
| Penstemon | Penstemon hartwegii |
| Penstemon | Penstemon heterophyllus |
| Penstemon | Penstemon isophyllus |
| Penstemon | Penstemon newberryi |
| Penstemon | Penstemon pinifolius |
| Penstemon | Penstemon procerus |
| Penstemon | Penstemon rupicola |
| Penstemon | Penstemon 'Purple Bedder' |
| Peony, Paeony | Paeonia |
| Peony, Paeony, Japanese lily | Paeonia lactiflora |
| Peony, Paeony | Paeonia suffruticosa |
| Peony, Paeony | Paeonia lactiflora 'Doctor Alexander Fleming' |
| Peony, Paeony | Paeonia lactiflora 'Duchesse de Nemours' |
| Peony, Paeony | Paeonia lactiflora 'Karl Rosenfield' |
| Peony, Paeony | Paeonia lactiflora 'Krinkled White' |
| Peony, Paeony | Paeonia lactiflora 'Sarah Bernhardt' |
| Peony, Paeony | Paeonia lactiflora 'Shirley Temple' |
| Peony, Paeony | Paeonia lactilfora 'Sword Dance' |
| Peony, Paeony | Paeonia suffruticosa 'Lu Mu Ying' |
| Peony, Paeony | Paeonia suffruticosa 'Mo Run Jue Lun' |
| Peony, Paeony | Paeonia x suffruticosa 'Wu Jin Yao Hui' |
| Peony | Paeonia caucasica |
| Peony | Paeonia emodi |
| Peony | Paeonia hybrida |
| Peony | Paeonia mascula |
| Peony | Paeonia veitchii |
| peony | Paeonia 'Coral Sunset' |
| Peony, Paeony | Paeonia lactiflora 'Doreen' |
| Peony, Japanese tree peony | Paeonia suffruticosa 'Shimazu Kurenai' |
| Peony | Paeonia 'Etched Salmon' |
| Peony, Paeony | Paeonia lactiflora 'Bowl of Cream' |
| Peony | Paeonia 'Old Faithful' |
| Peony | Paeonia lactiflora 'Adolphe Rousseau' |
| Peony | Paeonia lactiflora 'White Wings' |
| Peony, Chinese peony, Paeony | Paeonia lactiflora |
| Peony, Common peony, Garden peony | Paeonia officinalis |
| Pepper, Capsicum | Capsicum |
| Pepper tree, New Zealand pepper tree | Pseudowintera colorata |
| Peppermint chard, Rhubarb chard, Chard peppermint | Beta vulgaris |
| Peppermint, Black peppermint | Mentha x piperita |
| Perennial forget-me-not | Brunnera macrophylla |
| Perennial nasturtium | Tropaeolum tuberosum |
| Perennial phlox | Phlox paniculata |
| Perennial ryegrass | Lolium perenne |
| Perfoliate pondweed | Potamogeton perfoliatus |
| Periwinkle | Vinca |
| Persian iris | Iris persica |
| Persian ironwood | Parrotia persica |
| Persian onion, Star-of-Persia | Allium cristophii |
| Peruvian apple, Cactus | Cereus peruvianus |
| Peruvian lily | Alstroemeria |
| Peruvian lily | Alstroemeria aurea |
| Peruvian lily | Alstroemeria ligtu hybrids |
| Peruvian old man cactus, Cotton ball cactus | Espostoa lanata |
| Petticoat palm | Washingtonia filifera |
| Petunia | Petunia |
| Petunia | Petunia grandiflora |
| Petunia | Petunia 'Frills & Spills' |
| Petunia | Petunia 'Red Velvet' |
| Pheasant grass, Pheasant's tail grass, Ornamental grass | Stipa arundinacea |
| Pheasant's eye daffodil, Poet's narcissus | Narcissus poeticus |
| Pheasant's tail grass, Ornamental grass | Anemanthele lessoniana |
| Phlox | Phlox bifida |
| Phlox | Phlox drummondii 'Creme Brulee' |
| Pickerel weed | Pontederia |
| Pickerel weed | Pontederia cordata |
| Pieris | Pieris japonica |
| Pigmy rush | Juncus pygmaeus |
| Pill sedge | Carex pilulifera |
| Pine | Pinus |
| Pineapple mint, Variegated apple mint, Variegated round-leaved mint | Mentha suaveolens |
| Pineapple plant, Pineapple lily | Eucomis comosa |
| Pineapple sage | Salvia rutilans |
| Pineapple scented sage | Salvia elegans 'Scarlet Pineapple' |
| Pink, Carnation, Dianthus | Dianthus |
| pink, Carnation, Dianthus | Dianthus 'Pink Surprise' |
| Pink lavender, English lavender | Lavandula angustifolia |
| Pink rosemary | Rosmarinus officinalis |
| Pink star grass | Rhodohypoxis baurii |
| Pipewort | Eriocaulon aquaticum |
| Plain harlequin flower | Sparaxis grandiflora |
| Plane | Platanus |
| Plant's physician | Chamaemelum |
| Plantain lily, Funkia | Hosta sieboldiana |
| Plantain lily, Giant blue hosta, Funkia | Hosta sieboldiana var. elegans |
| Pleated snowdrop | Galanthus plicatus |
| Pleurisy root, Butterfly weed | Asclepias tuberosa |
| Plicate sweet-grass | Glyceria notata |
| Plum | Prunus domestica |
| Plume poppy | Macleaya microcarpa |
| Plumed cockscomb | Celosia argentea var. cristata Plumosa Group |
| Pocket handkerchief tree, Handkerchief tree, Dove tree | Davidia involucrata |
| Poinsettia | Euphorbia pulcherrima |
| Pokeroot | Phytolacca americana |
| Pole Evans pineapple lily | Eucomis pallidiflora subsp. pole-evansii |
| Polka-dot Plant, Baby's Tears, Freckle face, Hypoestes | Hypoestes phyllostachya |
| Polyanthus | Primula |
| Polyanthus | Primula Gold-laced Group |
| Polypody, Common polypody | Polypodium vulgare |
| Pomegranate | Punica granatum |
| Pond weed | Elodea crispa |
| Pondweed | Groenlandia |
| Poplar | Populus |
| Poppy | Papaver |
| Poppy | Papaver nudicaule |
| Poppy, Opium poppy | Papaver somniferum |
| Portuguese laurel, Laurel | Prunus lusitanica |
| Portuguese lavender, Spike lavender | Lavandula latifolia |
| Portuguese squill | Scilla peruviana |
| Pot marjoram | Origanum onites |
| Potato | Solanum tuberosum |
| Potato | Solanum tuberosum 'Jersey Royal' |
| Potato | Solanum tuberosum 'Setanta' |
| Potato | Solanum tuberosum 'Salad Blue' |
| Potato bean, American groundnut, groundnut, Indian potato | Apios americana |
| Potato vine | Solanum crispum |
| Potato vine | Solanum jasminoides |
| Potts' montbretia | Crocosmia pottsii |
| Prairie cord grass | Spartina pectinata |
| Prairie willow | Salix humillis |
| Prickly Moses | Acacia verticillata |
| Prickly sedge | Carex muricata |
| Primrose, Common primrose, native primrose, Primula | Primula vulgaris |
| Primula | Primula |
| Primula | Primula auricula |
| Primula | Primula secundiflora |
| Primula | Primula sieboldii |
| Princess lilies | Alstroemeria |
| Privet honeysuckle | Lonicera pileata |
| Prostrate rosemary | Rosmarinus lavandulaceous |
| Prostrate rosemary | Rosmarinus officinalis |
| Pumpkin | Cucurbita pepo |
| Pumpkin | Cucurbita pepo 'Crown Prince' |
| Pure yellow crocus | Crocus flavus |
| Purple angelica, Angelica | Angelica gigas |
| Purple beech | Fagus sylvatica |
| Purple beech, Copper beech | Fagus sylvatica |
| Purple blaze plum | Prunus cerasifera |
| Purple clematis | Clematis viticella |
| Purple fern-leaved beech | Fagus sylvatica |
| Purple hazel | Corylus maxima |
| Purple iris | Iris versicolor |
| Purple Joe Pye weed, Joe Pye weed, Purple boneset | Eupatorium purpureum |
| Purple loosestrife | Lythrum salicaria |
| Purple many-flowered rhododendron | Menziesia ciliicalyx lasiophylla |
| Purple moor grass, Blue moor grass | Molinia caerulea |
| Purple sage, Purple-leaved sage | Salvia officinalis |
| Purple small-reed | Calamagrostis canescens |
| Purple toadflax | Linaria purpurea |
| Purple-flowered rock rose | Cistus x purpureus 'Alan Fradd' |
| Purple-leaved plum | Prunus cerasifera |
| Purple-leaved plum | Prunus pissardii |
| Purple-stem cat's tail | Phleum phleoides |
| Purslane, Common purslane, Pigweed, Pursley | Portulaca oleracea |
| Pyracanthus | Pyracantha |
| Pyracanthus | Pyracantha 'Orange Glow' |
| Pyramidal orchid | Anacamptis pyramidalis |
| Pyrenean lily | Lilium pyrenaicum |
| Pyrenean saxifrage | Saxifraga umbrosa |
| Pyrenean squill | Scilla liliohyacinthus |
| Quaking grass | Briza media |
| Quamash | Camassia leichtlinii |
| Queen of the prairie | Filipendula rubra |
| Queen's Tears | Bilbergia nutans |
| Quince, Edible quince | Cydonia oblonga |
| Rabbit's ears | Stachys byzantina |
| Rabbit's ears | Stachys lanata |
| Radish | Raphanus sativus |
| Ragged robin | Lychnis flos-cuculi |
| Rain lily, Windflower | Zephyranthes candida |
| Ramanas rose | Rosa rugosa |
| Rannoch rush | Scheuchzeria palustris |
| Rare spring sedge | Carex ericetorum |
| Raspberry | Rubus idaeus |
| Rat's-tail fescue | Vulpia myuros |
| Red barked dogwood, Siberian dogwood | Cornus alba |
| Red betony | Stachys officinalis |
| Red campion | Silene dioica |
| Red corn lily | Ixia campanulata |
| Red fescue | Festuca rubra |
| Red helleborine | Cephalanthera rubra |
| Red horse chestnut | Aesculus x carnea |
| Red horse chestnut, California buckeye | Aesculus x carnea |
| Red hot poker | Kniphofia |
| Red hot poker, Torch lily | Kniphofia |
| Red Japanese Basil | Perilla frutescens |
| Red maple | Acer rubrum |
| Red mint | Mentha x smithiana |
| Red oak | Quercus rubra |
| Red orache | Atriplex hortensis |
| Red pepper | Capsicum |
| Red pondweed | Potamogeton alpinus |
| Red valerian | Centranthus ruber |
| Red-hot poker, Torch lily | Kniphofia 'Samuel's Sensation' |
| Red-hot poker | Kniphofia rooperi |
| Red-hot poker | Kniphofia uvaria |
| Red-hot poker | Kniphofia uvaria 'Nobilis' |
| Red-hot poker, Torch Lily | Kniphofia uvaria 'Royal Castle Hybrids' |
| Red-leaved banana | Musa ensete |
| Redcurrant | Ribes rubrum |
| Reed | Calamagrostis |
| Reed Canary grass | Phalaris arundinacea |
| Reed sweet-grass | Glyceria maxima |
| Reflexed saltmarsh grass | Puccinellia distans |
| Regal pelargonium, Geranium | Pelargonium |
| Remote sedge | Carex remota |
| Rescue brome | Bromus cathartica |
| Rhododendron | Rhododendron |
| Rhododendron | Rhododendron macabeanum |
| Rhododendron | Rhododendron schlippenbachii |
| Rhododendron | Rhododendron sinogrande |
| Rhododendron | Rhododendron yakushimanum |
| Rhodostachys | Fascicularia bicolor |
| Rhubarb | Rheum palmatum |
| Rhubarb | Rheum palmatum 'Stockbridge Arrow' |
| Ribbon-leaved water plantain | Alisma gramineum |
| Rice, Asian rice | Oryza sativa |
| Rice cutgrass | Leersia oryzoides |
| Ripgut brome | Bromus rigida |
| River birch | Betula nigra |
| Rocambole, Sand leek | Allium scorodoprasum |
| Rock hyssop | Hyssopus aristatus |
| Rock rose | Cistus x lenis 'Grayswood Pink' |
| Rock rose | Cistus x argenteus |
| Rock rose | Cistus x argenteus 'Silver Pink' |
| Rock rose, Purple-flowered rock rose | Cistus x purpureus |
| Rock rose | Helianthemum nummularium |
| Rock rose | Cistus 'Grayswood Pink' |
| Rock rose | Cistus 'Grayswood' |
| Rock rose | Cistus parviflorus |
| Rock samphire, Samphire, Sea fennel | Crithmum maritimum |
| Rock sedge | Carex rupestris |
| Roman chamomile | Chamaemelum nobile |
| Romanesco broccoli, Romanesco cauliflower | Brassica oleracea |
| Root chicory | Cichorium intybus var. sativum |
| Rootless duckweed | Wolffia arrhiza |
| Rosa mundi, Rose | Rosa gallica |
| Rosa mundi, French rose | Rosa mundi |
| Rose | Rosa |
| Rose | Rosa 'Albertine' |
| Rose | Rosa 'Aloha' |
| Rose | Rosa 'Blanche Double de Coubert' |
| Rose | Rosa BOSCOBEL ('Auscousin') |
| Rose | Rosa CHARITY ('Auschar') |
| Rose | Rosa DUCHESS OF CORNWALL ('Tan97159' PBR) |
| Rose | Rosa GERTRUDE JEKYLL® ('Ausbord') |
| Rose | Rosa 'Hansa' |
| Rose | Rosa 'Kiftsgate' |
| Rose | Rosa 'Königin von Dänemark' |
| Rose | Rosa LADY OF SHALOTT ('Ausnyson') |
| Rose | Rosa 'Louise Odier' |
| Rose | Rosa 'Macmillan Nurse' |
| Rose | Rosa 'Madame Alfred Carrière' |
| Rose | Rosa 'Madame Louis Leveque' |
| Rose | Rosa 'Paul's Himalayan Musk' |
| Rose | Rosa PRINCESS ALEXANDRA OF KENT® ('Ausmerchant') |
| Rose | Rosa 'Princess Alice' |
| Rose | Rosa PRINCESS ANNE ('Auskitchen' PBR) |
| Rose | Rosa 'Rambling Rector' |
| Rose | Rosa 'Sander's White Rambler' |
| Rose | Rosa SUSAN WILLIAMS-ELLIS ('Ausquirk') |
| Rose | Rosa 'The Queen of Denmark' |
| Rose | Rosa VANESSA BELL ('Auseasel') |
| Rose | Rosa 'William Lobb' |
| Rose | Rosa x alba 'Maiden's Blush' |
| Rose | Rosa x alba |
| Rose | Rosa centifolia |
| Rose | Rosa chinensis |
| Rose | Rosa x damascena |
| Rose | Rosa davidii |
| Rose | Rosa 'Buff Beauty' |
| Rose | Rosa moyesii |
| Rose | Rosa nitida |
| Rose | Rosa rubrifolia |
| Rose | Rosa rugosa |
| Rose | Rosa virginiana |
| Rose | Rosa xanthina |
| Rose | Rosa xanthina 'Canary Bird' |
| Rose | Rosa EMILY BRONTË ('Ausearnshaw' PBR) |
| Rose | Rosa HARLOW CARR ('Aushouse') |
| Rose | Rosa GABRIEL OAK ('Auscrowd') |
| Rose | Rosa 'Claire Austin' |
| Rose | Rosa 'Charles Darwin' |
| Rose | Rosa 'Frau Dagmar Hartopp' |
| Rose | Rosa 'Souvenir du St. Anne's' |
| Rose | Rosa 'Peotical Liz' |
| Rose | Rosa 'Hot Chocolate' |
| Rose | Rosa WHITE STAR ('Harquill') |
| Rose | Rosa OLIVIA ROSE AUSTIN® ('Ausmixture' PBR) |
| Rose | Rosa DESDAMONA® ('Auskindling') |
| Rose | Rosa THOMAS Ã BECKET ('Auswinston') |
| Rose | Rosa ROALD DAHL® ('Ausowlish' PBR) |
| Rose | Rosa ELIZABETH ('Ausmajesty' PBR) |
| Rose | Rosa QUEEN OF SWEDEN ('Austiger' PBR) |
| Rose | Rosa WILLIAM AND CATHERINE ('Ausrapper' PBR) |
| Rose | Rosa 'Blush Noisette' |
| Rose | Rosa 'Clarence House' |
| Rose | Rosa JAMES L. AUSTIN® ('Auspike') |
| Rose | Rosa WISLEY 2008® ('Ausbreeze' PBR) |
| Rose | Rosa SILAS MARNER® ('Ausraveloe') |
| Rose | Rosa GENTLE HERMIONE ('Ausrumba') |
| Rose campion | Lychnis coronaria |
| Rose of sharon, Aaron's Beard | Hypericum calycinum |
| Rosebud cherry | Prunus x subhirtella |
| Rosebud cherry, Higan cherry | Prunus x subhirtella |
| Roselle | Hibiscus sabdariffa |
| Rosemary | Rosmarinus officinalis |
| Rosy garlic | Allium roseum |
| Rough bent | Agrostis scabra |
| Rough dog's tail | Cynosurus echinatus |
| Rough meadow grass | Poa trivialis |
| Round fruited rush | Juncus compressus |
| Round-headed club rush | Scirpus holoschoenus |
| Round-headed leek, Bristol onion | Allium sphaerocephalon |
| Round-leaved sundew, Youth grass | Drosera rotundifolia |
| Royal fern | Osmunda regalis |
| Rubber plant, Indian rubber tree, Rubber fig, Rubber bush, Rubber tree | Ficus elastica 'Robusta' |
| Ruby chard | Beta vulgaris |
| Rudbeckia | Rudbeckia 'Prairie Sun' |
| Rue | Ruta graveolens |
| Runner bean | Phaseolus coccineus |
| Runner bean | Phaseolus coccineus 'Firestorm' |
| Rush | Juncus |
| Rush-leaved fescue | Festuca arenaria |
| Russet sedge | Carex saxatilis |
| Russian comfrey | Symphytum x uplandicum |
| Russian sage | Perovskia atriplicifolia |
| Russian snowdrop | Galanthus woronowii |
| Rye brome | Bromus secalinus |
| Ryegrass | Lolium |
| Sabra spike sage | Salvia confertiflora |
| Sacred bamboo | Nandina domestica |
| Safflower | Carthamus tinctoria |
| Sage | Salvia |
| Sage | Salvia microphylla |
| Sage | Salvia x jamensis 'Hot Lips' |
| Sage | Salvia 'Dyson's Joy' |
| Sage | Salvia 'Joy' |
| Sage | Salvia greggii 'Joy' |
| Sage, Common sage | Salvia officinalis |
| Sainfoin | Onobrychis viciifolia |
| Salad burnet, Pimpinella | Sanguisorba minor |
| Salad rocket, Rocket, Garden rocket, Arugula | Eruca sativa |
| Salad rocket | Eruca vesicaria subsp. sativa |
| Saltmarsh flat-sedge | Blysmus rufus |
| Saltmarsh rush | Juncus gerardii |
| Salvia | Salvia x superba |
| Sand cat's tail | Phleum arenarium |
| Sand couch | Elytrigia juncea |
| Sand crocus | Romulea columnae |
| Sand Sedge | Carex arenaria |
| Santa Cruz water lily | Victoria cruziana |
| Sapphire sage, Sage, Hummingbird sage, Anise scented sage | Salvia guaranitica |
| Sargent's cherry | Prunus x schmittii |
| Scabious | Scabiosa atropurpurea |
| Scabious | Scabiosa caucasica |
| Scabious | Scabiosa |
| Scandinavian small-reed | Calamagrostis purpurea |
| Scorched alpine sedge | Carex atrofusca |
| Scotch rose | Rosa pimpinellifolia var. harisonii |
| Scots pine | Pinus sylvestris |
| Scottish asphodel | Tofieldia pusilla |
| Scottish primrose | Primula scotica |
| Scottish small-reed | Calamagrostis scotica |
| Sea arrowgrass | Triglochin maritimum |
| Sea barley | Hordeum marinum |
| Sea beet | Beta vulgaris |
| Sea buckthorn, Sea-Buckthorn | Hippophae rhamnoides |
| Sea clubrush, Cosmopolitan bulrush | Bolboschoenus maritimus |
| Sea couch | Elytrigia atherica |
| Sea fern-grass | Catapodium marinum |
| Sea holly | Eryngium agavifolium |
| Sea holly | Eryngium bourgatii |
| Sea holly | Eryngium giganteum |
| Sea kale | Crambe maritima |
| Sea rush | Juncus maritimus |
| Sea thrift | Armeria maritima |
| Sea urchin cactus, Desert cactus | Echinopsis |
| Sea urchin cactus | Echinopsis scopulicola |
| Sedge | Carex |
| Sedge | Carex flagellifera |
| Sedge | Cyperus alternifolius |
| Sedge | Kobresia |
| Self heal | Prunella |
| Self heal | Prunella vulgaris |
| Sensitive fern | Onoclea sensibilis |
| Serviceberry | Amelanchier |
| Sessie oak | Quercus petraea |
| Sessile English oak | Quercus x rosacea |
| Shaggy Inkcap | Coprinus comatus |
| Shallot, Scallion | Allium cepa (Aggregatum Group) |
| Shallot, Scallion | Allium cepa |
| Shamrock | Oxalis |
| Sharp club rush | Schoenoplectus pungens |
| Sharp flowered rush | Juncus acutiflorus |
| Sharp rush | Juncus acutus |
| Sharp-leaved pondweed | Potamogeton acutifolius |
| Shasta daisy | Leucanthemum x superbum |
| Sheathed sedge | Carex vaginata |
| Sheep's fescue | Festuca ovina |
| Sheeps bit scabious | Jasione montana |
| Sheperd's purse | Capsella bursa-pastoris |
| Shetland mouseear | Cerastium nigrescens |
| Shetland pondweed | Potamogeton rutilus |
| Shining pondweed | Potamogeton lucens |
| Shirasawa maple | Acer shirasawanum MOONRISE ('Munn 001'PBR) |
| Shiso, Perilla | Perilla frutescens |
| Shortawn foxtail, Orange foxtail | Alopecurus aequalis |
| Shrubby honeysuckle, Winter-flowering honeysuckle, Honeysuckle | Lonicera fragrantissima |
| Shrubby horehound | Ballota acetabulosa |
| Shrubby ragwort | Brachyglottis (Dunedin Group) |
| Siberian dogwood | Cornus alba 'Sibirica Variegata' |
| Siberian Larkspur | Delphinium grandiflorum |
| Siberian squill | Scilla siberica |
| Sieber's crocus | Crocus sieberi |
| Silk tassel bush | Garrya elliptica |
| Silver birch | Betula pendula |
| Silver hairgrass | Aira caryophyllea |
| Silver sage | Salvia argentea |
| Silver thyme, Thyme | Thymus vulgaris |
| Sily wisteria | Wisteria brachybotrys |
| Sitka spruce | Picea sitchensis |
| Skullcap | Scutellaria lateriflora |
| Slender club rush | Isolepis cernua |
| Slender cock's foot | Dactylis polygama |
| Slender cottongrass | Eriophorum gracile |
| Slender naiad | Najas flexilis |
| Slender rush | Juncus tenuis |
| Slender sedge | Carex lasiocarpa |
| Slender soft brome | Bromus lepidus |
| Slender spike rush | Eleocharis uniglumis |
| Slender tufted sedge | Carex acuta |
| Slender wild oat | Avena barbata |
| Slender-leaved pondweed | Potamogeton filiformis |
| Small cord grass | Spartina maritima |
| Small lovegrass | Eragrostis minor |
| Small pondweed | Potamogeton berchtoldii |
| Small scabious | Scabiosa columbaria |
| Small sweet-grass, Waxy mannagrass | Glyceria declinata |
| Small-flowered gladiolus | Gladiolus |
| Small-flowered gladiolus | Gladiolus x colvillei |
| Small-leaved lime | Tilia cordata |
| Small-white orchid | Pseudorchis albida |
| Smaller cat's tail | Phleum bertolonii |
| Smilo grass | Oryzopsis miliacea |
| Smith's brome | Bromus pseudosecalinus |
| Smoke bush | Cotinus coggygria |
| Smooth brome | Bromus racemosus |
| Smooth cord grass | Spartina alterniflora |
| Smooth finger grass, Small crabgrass | Digitaria ischaemum |
| Smooth meadow grass | Poa pratensis |
| Smooth-leaved elm | Ulmus minor |
| Smooth-stalked sedge | Carex laevigata |
| Snake's head fritillary, Snake's head lily, Spotted head fritillary | Fritillaria meleagris |
| Snake's-head iris | Hermodactylus tuberosus |
| Snake-bark maple | Acer grosseri |
| Snakebark maple 'Red Flamingo' | Acer 'Red Flamingo' |
| Snakebark maple 'Red Flamingo' | Acer x conspicuum 'Red Flamingo' |
| Snapdragon | Antirrhinum majus |
| Sneezeweed | Helenium |
| Sneezeweed | Helenium autumnale 'Moerheim Beauty' |
| Sneezeweed, Helen's flower, Perennial daisy | Helenium |
| Sneezewort | Achillea ptarmica |
| Snow in summer | Cerastium tomentosum |
| Snowdon lily | Lloydia serotina |
| Snowdrop, Snow piercers, Candlemas flower, Snowbells, Dewdrops | Galanthus |
| Snowdrop | Galanthus nivalis |
| Snowdrop | Galanthus atkinsii |
| Snowdrop tree | Halesia moticola |
| Snowdrop, Common snowdrop, Snow piercers | Galanthus nivalis |
| Snowy Mespilus, Serviceberry | Amelanchier lamarckii |
| Snowy wood rush | Luzula nivea |
| Soapwort | Saponaria officinalis |
| Soft brome | Bromus hordeaceus |
| Soft rush | Juncus effusus |
| Soft tree fern, Common tree fern | Dicksonia antarctica |
| Soft-leaved sedge | Carex montana |
| Solomon's seal | Polygonatum x hybridum |
| Solomon's-seal | Polygonatum multiflorum |
| Somerset hair grass | Koeleria vallesiana |
| Somerset rush | Juncus subulatus |
| Sorbus | Sorbus |
| Sorrel, Broad-leaved sorrel | Rumex acetosa |
| Sour cherry | Prunus avium 'Stella Compact' |
| Sour cherry | Prunus avium 'Van' |
| South African cornflag | Chasmanthe floribunda |
| South American waterweed | Elodea callitrichoides |
| Southern beech | Nothofagus dombeyi |
| Southern marsh orchid | Dactylorhiza praetermissa |
| Southern wood rush | Luzula forsteri |
| Southernwood, Sagebrush | Artemisia abrotanum |
| Spanish bayonet, Our Lord's candle | Hesperoyucca whipplei |
| Spanish bluebell | Hyacinthoides hispanica |
| Spanish gorse | Genista hispanica |
| Spanish iris | Iris xiphium |
| Spanish lavender, French lavender | Lavandula stoechas |
| Spearmint | Mentha spicata |
| Speedwell | Veronica spicata 'Red Fox' |
| Spider flowers | Grevillea |
| Spider lily 'Sunshine Charm' | Tradescantia x andersoniana (Andersoniana group) 'Sunshine Charm' (Charm Series) |
| Spiderwort | Tradescantia virginiana |
| Spiked sedge | Carex spicata |
| Spiked star of Bethlehem | Ornithogalum pyrenaicum |
| Spiked wood rush | Luzula spicata |
| Spinach | Spinacia oleracea |
| Spinach beet | Beta vulgaris |
| Spinach, Summer spinach | Spinacia oleracea |
| Spindle tree, Spindle | Euonymus |
| Spindle tree, Spindle | Euonymus europaeus |
| Spineless butcher's broom | Ruscus hypoglossum |
| Spiral tasselweed | Ruppia cirrhosa |
| Spleenwort | Asplenium |
| Spotted deadnettle | Lamium maculatum GOLDEN ANNIVERSARY ('Dellam' PBR) |
| Spotted fritillaries | Fritillaria atropurpurea |
| Spreading meadow grass | Poa humilis |
| Spring cinquefoil, Spotted cinquefoil | Potentilla neumanniana |
| Spring cinquefoil, Spotted cinquefoil | Potentilla verna |
| Spring crocus | Crocus vernus |
| Spring onion, Scallion, green onion, salad onion | Allium cepa 'White Lisbon' |
| Spring pea, Bitter vetch | Lathyrus vernus |
| Spring sedge | Carex caryophyllea |
| Spring snowflake, Snowflake | Leucojum vernum |
| Spring squill | Scilla verna |
| Spring starflower | Ipheion uniflorum |
| Spurge | Euphorbia amygdaloides |
| Spurge, Euphorbia | Euphorbia |
| Spurge, Euphorbia, Milkweed | Euphorbia amygdaloides |
| Spurge, Euphorbia | Euphorbia characias |
| Spurge, Euphorbia | Euphorbia griffithii |
| Spurge, Euphorbia | Euphorbia polychroma |
| Square-stemmed bamboo | Chimonobambusa quadrangularis |
| Squash | Cucubita maxima |
| Squash | Cucurbita |
| Squirrel-tail fescue | Vulpia bromoides |
| St John's wort, Goldencup | Hypericum patulum |
| St John's Wort | Hypericum perforatum |
| St Patrick's cabbage | Saxifraga spathularis |
| Stag's horn sumach, The staghorn sumac, velvet sumac, vinegar tree | Rhus typhina |
| Star jasmine, Chinese star jasmine, Confederate jasmin | Trachelospermum jasminoides |
| Star of Bethlehem | Ornithogalum angustifolium |
| Star sedge | Carex echinata |
| Starfruit | Damasonium alisma |
| Starved wood sedge | Carex depauperata |
| Steel blue oat grass | Helictotrichon sempervirens |
| Stiff saltmarsh grass | Puccinellia rupestris |
| Stiff Sedge | Carex bigelowii |
| Stinking iris, Roast-beef plant | Iris foetidissima |
| Stinking nanny, Ragwort, Cankerwort | Senecio jacobaea |
| Stock | Matthiola |
| Stonecrop | Sedum spectabile |
| Stonecrop, Ice plant | Sedum 'Herbstfreude' |
| Stonecrop, Ice plant | Sedum |
| Straw flower | Bracteantha bracteata |
| Strawberry | Fragaria |
| Strawberry | Fragaria x ananassa |
| Strawberry | Fragaria x ananassa 'Elan' |
| Strawberry | Fragaria x ananassa 'Lusa' |
| Strawberry | Fragaria x ananassa 'Malling Centenary' |
| Strawberry foxglove | Digitalis x mertonensis |
| Strawberry tree | Arbutus |
| Strawberry tree | Arbutus x andrachnoides |
| Strawberry tree, Cane apple | Arbutus unedo |
| Strawflower, Everlasting flower, Immortelle | Helichrysum bracteatum |
| String of Hearts, Rosary Vine | Ceropegia woodii |
| String sedge | Carex chordorrhiza |
| Sugar beet | Beta vulgaris |
| Sugar maple, Silver maple | Acer saccharinum |
| Sugar snap, Snap pea | Pisum sativum var. macrocarpon |
| Sulphur clover | Trifolium ochroleucum |
| Summer lady's tresses | Spiranthes aestivalis |
| Summer savory | Satureja hortensis |
| Summer snowflake, Loddon lily | Leucojum aestivum |
| Sun rose | Cistus |
| Sunflower | Helianthus |
| Sunflower | Helianthus annuus |
| Sunflower | Helianthus atrorubens |
| Sunflower | Helianthus salicifolius |
| Sunflower | Helianthus debilis |
| Swamp lily, White Powell lily | Crinum x powellii 'Album' |
| Swamp meadow grass | Poa palustris |
| Swede, Rutabaga | Brassica napus |
| Swede, Swedish turnip, Neep | Brassica napus |
| Sweet alyssum | Lobularia maririma |
| Sweet briar rose | Rosa rubiginosa |
| Sweet cherry, Wild bird cherry, Wild cherry, Gean, Mazzard | Prunus avium |
| Sweet cherry | Prunus avium 'Merton Glory' |
| Sweet cherry | Prunus avium 'Kordia' |
| Sweet chestnut | Castanea sativa |
| Sweet cicely | Myrrhis odorata |
| Sweet corn, Maize | Zea mays |
| Sweet flag, Variegated flag iris, Flag iris | Acorus calamus |
| Sweet gum | Liquidambar styraciflua |
| Sweet marjoram | Origanum majorana |
| Sweet pea | Lathyrus |
| Sweet pea | Lathyrus odoratus |
| Sweet pepper | Capsicum 'Cabeneros' |
| Sweet pepper | Capsicum 'Lany' |
| Sweet pepper, Yellow pepper | Capsicum |
| Sweet rocket | Hesperis matronalis |
| Sweet rocket, Dame's violet | Hesperis matronalis |
| Sweet vernalgrass | Anthoxanthum odoratum |
| Sweet violet | Viola 'Rubra' |
| Sweet violet, Parma violet | Viola odorata |
| Sweet violet | Viola 'Coeur d' Alsace' |
| Sweet violet | Viola odorata 'Coeur d' Alsace' |
| Sweet violet | Viola odorata 'Aurea' |
| Sweet violet | Viola odorata 'Miracle Mixed' |
| Sweet violet | Viola odorata 'Odorata Rubra' |
| Sweet violet | Viola 'Bournemouth Gem' |
| Sweet William, Bearded pink, London Pride. | Dianthus barbatus |
| Sweet woodruff, Yew | Asperula odorata |
| Sweet-grass | Glyceria |
| Sweetcorn, Sweet corn, Sugar corn | Zea mays var. rugosa |
| Sweetspires | Itea |
| Swiss chard, Seakale beet | Beta vulgaris |
| Swiss chard, Ruby chard, Rhubard chard, Seakale beet | Beta vulgaris |
| Swiss willow | Salix helvetica |
| Sword lily | Gladiolus |
| Sycamore (UK), Sycamore maple (USA) | Acer pseudoplatanus |
| Sycamore, Sycamore maple | Acer pseudoplatanus 'Brilliantissimum' |
| Tail flower, Painter's palette, Flamingo flower, Lace leaf | Anthurium andreanum |
| Tall bearded iris | Iris |
| Tall Bog sedge | Carex magellanica |
| Tall fescue | Festuca arundinacea |
| Tamarisk | Tamarix |
| Tamarisk | Tamarix tetranda |
| Tansy | Tanacetum vulgare |
| Tapegrass | Vallisneria spiralis |
| Tassel grape hyacinth | Muscari comosum |
| Tasteless water-pepper | Polygonum laxiflorum |
| Tawny sedge | Carex hostiana |
| Tayberry | Rubus |
| Tazetta narcissi, Daffodil, Dwarf daffodil | Narcissus |
| Tazetta narcissi, Dwarf daffodil | Narcissus |
| Teasle | Dipsacus fullonum |
| The horsetail tree | Equisetum telmateia |
| The red-leaved rose | Rosa glauca |
| The stinking hellebore, Stinkwort, Dungwort | Helleborus foetidus |
| The tropical fern | Pteridium esculentum |
| The white rose of York | Rosa x alba |
| Thin-spiked wood sedge | Carex strigosa |
| Thistle, Globe thistle | Echinops ritro |
| Thorn tree | Acacia robusta |
| Thread leaf coreopsis, Tickseed | Coreopsis verticillata |
| Thread rush | Juncus filiformis |
| Three flowered rush | Juncus triglumis |
| Three leaved rush | Juncus trifidus |
| Three-cornered garlic | Allium triquetrum |
| Three-nerved sedge | Carex trinervis |
| Thrift | Armeria juniperifolia |
| Thyme | Thymus |
| Thyme | Thymus serpyllum |
| Thyme cilicicius | Thymus cilicicius |
| Thyme leaved savory | Satureja thymbra |
| Tickseed | Coreopsis grandiflora |
| Tickseed | Coreopsis tinctoria |
| Timothy grass | Phleum pratense |
| Titan arum, Corpse flower | Amorphophallus titanum |
| Toad rush | Juncus bufonius |
| Toadflax | Linaria |
| Tobacco | Nicotiana rustica |
| Tobacco | Nicotiana tabacum |
| Toetoe | Cortaderia fulvida |
| Toetoe | Cortaderia richardii |
| Tomato | Solanum lycopersicum |
| Tomato | Solanum lycopersicum 'Ailsa Craig' |
| Tomato | Solanum lycopersicum 'Sungold' |
| Tomato | Lycopersicum esculentum |
| Tomato | Solanum lycopersicum 'Tiger' |
| Toothpick plant, Bishop's weed, Khella, Bisnaga | Ammi visnaga |
| Toothpick plant, Bishop's weed, Khella, Bisnaga | Ammi visnaga 'Green Mist' |
| Tor-grass | Brachypodium pinnatum |
| Tormentil | Potentilla erecta |
| Tower mustard | Arabis glabra |
| Trailing abutilon | Abutilon megapotamicum |
| Tree fern, Australian tree fern, Rough tree fern, | Cyathea australis |
| Tree fern | Cyathea cunninghamii |
| Tree heather | Erica arborea |
| Tree of a thousand stars | Serissa japonica |
| Tree of Heaven | Ailanthus altissima |
| Tree of Heaven | Ailanthus altissima 'Purple Dragon' |
| Tree onion | Allium cepa |
| Tree peony | Paeonia ostii |
| Tree peony | Paeonia potaninii |
| Tree peony | Paeonia szechuanica |
| Tree peony, Japanese tree peony | Paeonia x suffruticosa 'Flight of Cranes' |
| Tree peony, Dian mu dan, Paeony | Paeonia delavayi |
| Tree peony, Dian mu dan, Paeony | Paeonia lutea |
| Tree peony, Japanese tree peony, Paeony | Paeonia x suffruticosa 'Renkaku' |
| Tree spinach | Chenopodium giganteum |
| Tresco rhodostachys | Ochagavia carnea |
| Triangular club rush | Schoenoplectus triqueter |
| Tricolour sage | Salvia officinalis |
| Trident maple, Three-toothed maple | Acer buergerianum |
| Trillium | Trillium |
| Tropical tea tree | Carmona |
| True fox sedge | Carex vulpina |
| Trumpet vine | Campsis |
| Trumpet vine | Campsis radicans |
| Tubular corn lily | Ixia paniculata |
| Tufted hair grass, Wavy hair grass | Deschampsia cespitosa |
| Tufted hair grass, Wavy hair grass | Deschampsia cespitosa 'Pink Lace' |
| Tufted hair grass, Tussock grass | Deschampsia cespitosa |
| Tulip | Tulipa |
| Tulip | Tulipa batalinii |
| Tulip | Tulipa dasystemon |
| Tulip | Tulipa Fosteriana hybrid |
| Tulip | Tulipa Greigii hybrid |
| Tulip | Tulipa iliensis |
| Tulip | Tulipa ingens |
| Tulip | Tulipa linifolia |
| Tulip | Tulipa polychroma |
| Tulip | Tulipa tarda |
| Tulip | Tulipa turkestanica |
| Tulip tree | Liriodendron tulipfera |
| Tulip tree | Liriodendron tulipifera |
| Turfted sedge | Carex elata |
| Turkey oak | Quercus cerris |
| Turkish iris | Iris orientalis |
| Turnip | Brassica rapa |
| Tussac grass | Poa flabellata |
| Twayblade, Common twayblade | Listera ovata |
| Two flowered rush | Juncus biglumis |
| Two rowed barley | Hordeum distichon |
| Umbrella bamboo | Fargesia murielae 'Jumbo' |
| Umbrella bamboo | Fargesia rufa |
| Umbrella palm | Cyperus involucratus |
| Umbrella pine, Stone pine | Pinus pinea |
| Umbrella plant | Darmera peltata |
| Unbranched bur reed | Sparganium emersum |
| Upright brome | Bromopsis erecta |
| Valerian | Valeriana |
| Valerian | Valeriana officinalis |
| Variegated forget-me-not | Myosotis sylvatica |
| Variegated forget-me-not, forget-me-not | Myosotis variegatus |
| Variegated greater periwinkle | Vinca major 'Variegata' |
| Variegated greater periwinkle | Vinca major 'Elegantissima' |
| Variegated hebe | Hebe x franciscana 'Variegata' |
| Variegated Japanese laurel | Aucuba japonica |
| Variegated lemon thyme | Thymus x citriodorus |
| Variegated rue | Ruta graveolens |
| Variegated sedge | Carex morrowii |
| Variegated sycamore | Acer pseudoplatanus |
| Various-leaved fescue | Festuca heterophylla |
| Various-leaved pondweed | Potamogeton gramineus |
| Varnish Tree | Rhus verniciflua |
| Veined yellow-eyed grass | Sisyrinchium laxum |
| Veitch's bamboo | Sasa veitchii |
| Velvet bent | Agrostis canina |
| Velvet Cardboard Anthurium | Anthurium clarinervium |
| Verbena | Verbena |
| Vervain | Verbena officinalis |
| Viburnum, Arrowwood | Viburnum carlesii 'Aurora' |
| Viburnum | Viburnum x juddii |
| Viburnum | Viburnum macrocephalum |
| Vietnamese coriander, Vietnamese mint | Persicaria odorat |
| Vine | Vitis |
| Vine, Grape | Vitis |
| Vine, Grape | Vitis vinifera |
| Viola | Viola |
| Violet, Viola | Viola |
| Violet | Viola tricolor |
| Violet helleborine | Epipactis purpurata |
| Violet willow | Salix daphnoides |
| Violet, Pansy, Violet | Viola |
| Vipers bugloss | Echium pininana |
| Vipers bugloss | Echium vulgare |
| Virginia creeper | Parthenocissus quinquefolia |
| Vitex | Vitex negundo |
| Viviparous sheep's fescue | Festuca vivipara |
| Wall barley | Hordeum murinum |
| Wall germander | Teucrium x lucidrys |
| Wall-rocket | Diplotaxis |
| Wall-spray | Cotoneaster horizontalis |
| Wallflower | Erysimum |
| Wallflower, Perennial wallflower | Erysimum |
| Walnut | Juglans regia |
| Wandering Jew, Small-leaf spiderwort | Tradescantia fluminensis |
| Water bent, Beardless rabbit's foot grass | Polypogon viridis |
| Water buttercup, Ivy-leaved crowfoot | Ranunculus hederaceous |
| Water finger grass | Paspalum distichum |
| Water forget-me-not | Myosotis scorpioides |
| Water hyacinth | Eichhornia crassipes |
| Water lettuce | Pistia stratiotes |
| Water lily, Waterlily | Nymphaea |
| Water lily, Waterlily | Nymphaea alba |
| Water milfoil | Myriophyllum propium |
| Water mint, Fish mint | Mentha aquatica |
| Water sedge | Carex aquatilis |
| Water soldier | Stratiotes aloides |
| Water Violet, Featherfoil | Hottonia palustris |
| Watercress, Yellowcress | Nasturtium officinale |
| Wavy hair grass | Deschampsia flexuosa |
| Wavy meadow grass | Poa flexuosa |
| Wax begonia | Begonia semperflorens |
| Wayfaring tree | Viburnum lantana |
| wedding cake tree, variegated table dogwood | Cornus controversa 'Variegata' |
| Weeping beech | Fagus sylvatica |
| Weeping Beech, Weeping purple beech | Fagus sylvatica |
| Weeping fig, Benjamin's fig | Ficus benjamina |
| Weeping hawthorn | Crataegus monogyna |
| weeping hornbeam | Carpinus betulus 'Pendula' |
| Weeping pear, Willow-leaved pear | Pyrus salicifolia |
| Weeping Yoshino cherry | Prunus x yedoensis |
| Weigela | Weigela |
| Welsh onion, Japanese bunching onion | Allium fistulosum |
| Western brome | Bromus marginata |
| Western coneflower, Rudbeckia | Rudbeckia occidentalis |
| Western gorse | Ulex gallii |
| Western hemlock | Tsuga heterophylla |
| Western marsh orchid | Dactylorhiza majalis |
| Western mugwort | Artemisia ludoviciana 'Valerie Finnis' |
| Western red ceder | Thuja plicata |
| White asphodel | Asphodelus albus |
| White beak sedge | Rhynchospora alba |
| White birch, European white birch, Downy birch, Moor birch | Betula pubescens |
| White campion | Silene latifolia |
| White helleborine | Cephalanthera damasonium |
| White Jacob's ladder | Polemonium caeruleum |
| White laceflower | Orlaya grandiflora |
| White mulberry | Morus alba |
| White muskmallow | Malva moschata |
| White nettle, White dead-nettle | Lamium album |
| White poplar | Populus alba |
| White rose of York | Rosa x alba |
| White sedge | Carex curta |
| White thyme | Thymus albus |
| White willow | Salix alba |
| White wood rush | Luzula luzuloides |
| White-barked Himalayan birch | Betula jacquemontii |
| White-flowered rose campion, White rose campion, White corn rose | Lychnis coronaria 'Alba' |
| White-flowered shrubby penstemon | Penstemon fruticosus var. scouleri 'Albus' |
| Whitebeam | Sorbus aria |
| Whitecurrant | Ribes |
| Whorl-grass | Catabrosa aquatica |
| Whorled Solomon's-seal | Polygonatum verticillatum |
| Wild garlic, Ransoms, Wood garlic | Allium ursinum |
| Wild ginger | Asarum europaeum |
| Wild gladiolus | Gladiolus illyricus |
| Wild leek | Allium ampeloprasum |
| Wild mustard | Brassica oleracea |
| Wild oat | Avena fatua |
| Wild rocket | Diplotaxis tenuifolia |
| Wild service tree | Sorbus torminalis |
| Wild thyme, Creeping thyme, Thyme | Thymus serpyllum |
| Wild tulip | Tulipa sylvestris |
| Willow | Salix |
| Willow | Salix alba |
| Willow, Goat willow, Pussy willow | Salix caprea |
| Windflower | Anemone blanda |
| Windflower, Wood anemone, Anemone of Great Britain | Anemone nemerosa |
| Windmill palm | Trachycarpus takil |
| Winter aconite | Eranthis hyemalis |
| Winter flowering honeysuckle, Christmas box, Sweet box | Sarcococca |
| Winter flowering iris, Algerian iris, Algerian winter iris | Iris unguicularis |
| Winter flowering pansy | Viola x wittrockiana |
| Winter jasmine, Yingchun, Yellow winter jasmine | Jasminum nudiflorum |
| Winter savory | Satureja montana |
| Winter wild oat | Avena sterilis |
| Winter-flowering cherry, Rosebud cherry | Prunus x subhirtella |
| Wintergreen, Checkerberry | Gaultheria procumbens |
| Wintersweet | Chimonanthus praecox |
| Wire-netting bush | Corokia cotoneaster |
| Wisteria | Wisteria |
| Witch alder | Fothergilla monticola |
| Witch hazel | Hamamelis x intermedia |
| Witch hazel | Hamamelis x intermedia 'Diane' |
| Witch hazel | Hamamelis mollis 'Pallida' |
| Witch hazel, Chinese witch hazel | Hamamelis mollis |
| Witch's butter, Yellow brain fungus, Jelly fungus | Tremella mesenterica |
| Woad | Isatis tinctoria |
| Wolfsbane | Aconitum lycoctonum |
| Wolfsbane, Monkshood | Aconitum |
| Wood aster | Aster divaricatus |
| Wood barley | Hordelymus europaeus |
| Wood club rush | Scirpus sylvaticus |
| Wood fescue | Festuca altissima |
| Wood lily, Trillium | Trillium grandiflorum |
| Wood meadow grass | Poa nemoralis |
| Wood melick | Melica uniflora |
| Wood millet | Milium effusum |
| Wood sage | Teucrium scorodonia |
| Wood sedge | Carex sylvatica |
| Wood small-reed | Calamagrostis epigejos |
| Wood spurge | Euphorbia robbiae |
| Woolley lavender | Lavandula x chaytoriae |
| Woolly lavender, Lavender | Lavandula lanata |
| Woolly willow | Salix lanata |
| Wormwood | Artemisia |
| Wormwood | Artemisia absinthium |
| Wych elm | Ulmus glabra |
| Xanthium | Xanthium orientale |
| Yakushima rhododendron | Rhododendron yakushimanum Hybrids Mixed |
| Yama-Shakuyaku, Peony | Paeonia japonica |
| Yard-long bean, Asparagus bean, Snake bean, Peru bean, Kouseband, String bean | Vigna unguiculata |
| Yarrow, The virgin's lavender | Achillea |
| Yarrow, Common yarrow, Arrowroot, Bloodwort, Milfoil, Nosebleed, Snake's grass, Woundwort, Devil's nettle | Achillea millefolium |
| Yarrow | Achillea umbellata |
| Yarrow | Achillea sibirica subsp. camschatica 'Love Parade' |
| Yarrow | Achillea sibirica 'Love Parade' |
| Yellow archangel | Lamium galeobdolon |
| Yellow garlic | Allium moly |
| Yellow glasswort | Salicornia fragilis |
| Yellow melilot | Melilotus officinalis |
| Yellow oat grass | Trisetum flavescens |
| Yellow pepper | Capsicum |
| Yellow rattle | Rhinanthus major |
| Yellow sedge | Carex viridula |
| Yellow star of Bethlehem | Gagea lutea |
| Yellow-eyed grass | Sisyrinchium californicum |
| Yew, English yew, Golden yew | Taxus baccata |
| Yorkshire Fog, Velvet Grass | Holcus lanatus |
| Yoshino cherry | Prunus x yedoensis |
| Young's helleborine | Epipactis youngiana |
| Yucca | Yucca |
| Yucca | Yucca x floribunda |
| Yucca | Yucca gloriosa |
| Yucca | Yucca recurva |
| Zebra grass | Miscanthus sinensis |
| Zebra grass | Schoenoplectus |
| Zinnia | Zinnia elegans |
