| Acanthopanax sieboldiana 'Variegatus' | Acanthopanax |
| Acanthus m. 'New Zealand Gold' | Bear's Breeches |
| Acanthus mollis | Bear's Breeches |
| Acanthus spinosus | Bear's Breeches |
| Achillea 'Coronation Gold' | Yarrow |
| Achillea m. 'Summer Pastels' | Yarrow |
| Achillea millefolium 'Colorado' | Yarrow |
| Achillea millefolium 'Moonshine' | Yarrow |
| Achillea millefolium 'Paprika' | Yarrow |
| Achillea millefolium 'Summerwine' | Yarrow |
| Achillea millefolium 'Terra Cotta' | Yarrow |
| Achlys triphylla | Vanilla Leaf |
| Aconitum carmichaelii 'Pink Sensation' | Monkshood |
| Aconitum napellus 'Rubellum' | Monkshood |
| Aconitum 'Stainless Steel' | Monkshood |
| Acorus gramineus | Japanese Sweetflag |
| Acorus gramineus 'Ogon' | Ogon Sweetflag |
| Acorus gramineus 'Pusillus Minimus Aureus' | Japanese Sweetflag |
| Acorus gramineus 'Variegatus' | Sweetflag |
| Actaea matsumurae 'White Pearl' | Bugbane |
| Actaea pachypoda | Dolls Eyes |
| Actaea racemosa | Black Cohosh |
| Actaea simplex 'Black Negligee´ | Bugbane |
| Actaea simplex 'Hillside Black Beauty' | Bugbane |
| Adenophora 'Amethyst' | Lady Bells |
| Adenophora confusa | Lady Bells |
| Adiantum aleuticum | Five-Finger Maidenhair Fern |
| Adiantum hispidulum | Rosy Maidenhair Fern |
| Adiantum pedatum 'Miss Sharples' | Golden Maidenhair Fern |
| Agapanthus 'Headbourne Hyb Pinocchio' | Lily-of-the-Nile |
| Agapanthus 'Headbourne Hybrids' | Lily-of-the-Nile |
| Agapanthus 'Peter Pan' | Lily-of-the-Nile |
| Agapanthus 'Sea Foam' | Lily-of-the-Nile |
| Agastache a. 'Apricot Sprite' | Giant Hyssop |
| Agastache a. 'Apricot Sunrise' | Giant Hyssop |
| Agastache barberi 'Firebird' | Giant Hyssop |
| Agastache barberi 'Tutti Frutti' | Giant Hyssop |
| Agastache 'Blue Fortune' | Giant Hyssop |
| Agastache cana 'Heather Queen' | Giant Hyssop |
| Agastache cana 'Sinning' | Giant Hyssop |
| Agastache f. 'Golden Jubilee' | Giant Hyssop |
| Agastache foeniculum | Anise Hyssop |
| Agastache 'Honey Bee Blue' | Giant Hyssop |
| Agastache 'Pink Panther' | Giant Hyssop |
| Agastache rupestris | Giant Hyssop |
| Agastache urticifolia | Giant Hyssop |
| Ajuga 'Bronze Beauty' | Bugleweed |
| Ajuga 'Catlin's Giant' | Bugleweed |
| Ajuga 'Rainbow' | Bugleweed |
| Ajuga 'Silver Beauty' | Bugleweed |
| Alcea 'Creme de Cassis' | Hollyhock |
| Alcea rosea 'Chater's dbl Purple' | Hollyhock |
| Alcea rosea 'Chater's dbl Scarlet' | Hollyhock |
| Alcea rosea 'Chater's dbl White' | Hollyhock |
| Alcea rosea 'Nigra' | Hollyhock |
| Alcea rosea 'Peaches & Dreams' | Hollyhock |
| Alcea rosea 'Powderpuff' | Hollyhock |
| Alchemilla alpina | Lady's Mantle |
| Alchemilla erythropoda | Lady's Mantle |
| Alchemilla mollis | Lady's Mantle |
| Allium s. 'Glaucum' | Ornamental Onion |
| Allium schoenoprasum | Chives |
| Allium senescens 'Mongolian Gem' | Ornamental Onion |
| Alstroemeria 'Glory of the Andes' | Peruvian Lily |
| Alstroemeria 'Sweet Laura' | Peruvian Lily |
| Ampelopsis 'Elegans' | Porcelain Berry Vine |
| Amsonia hubrechtii | Blue Star Flower |
| Anemone h. 'Prins Henry' | Windflower |
| Anemone hyb. 'Hadspen Abundance' | Japanese Anemone |
| Anemone hyb. 'Honorine Jobert' | Japanese Anemone |
| Anemone hyb. 'Party Dress' | Japanese Anemone |
| Anemone hyb. 'Queen Charlotte' | Windflower |
| Anemone multifida 'Rubra' | Windflower |
| Anemone nemor?sa 'Blue Beauty' | Anemone |
| Anemone nemor?sa 'Bracteata Pleniflora' | Anemone |
| Anemone sylvestris | Snowdrop Anemone |
| Anemone t. 'Robustissima' | Windflower |
| Angelica gigas | Angelica |
| Anthemis Biebersteiniana | Hardy Marguerite Daisy |
| Aquilegia alpina | Columbine |
| Aquilegia 'Black Barlow' | Columbine |
| Aquilegia chrysantha 'DenverGold' | Columbine |
| Aquilegia 'Harmony Music Mix' | Columbine |
| Aquilegia 'Nora Barlow' | Columbine |
| Aquilegia 'Songbird Mix' | Columbine |
| Aquilegia 'Woodside Variegated' | Columbine |
| Arachniodes aristata var variegata | East Indian Holly Fern |
| Arctostaphylos uva ursi 'Vancouver Jade' | Kinnikinnick |
| Arenaria balearica | Corsican Sandwort |
| Arenaria montana | Sandwort |
| Arisaema triphyllum | Jack-in-the-Pulpit |
| Aristolochia baetica | Dutchman's Pipe |
| Armeria maritima 'Rubrifolia' | Sea Thrift |
| Armoracia rusticana ‘Variegata’ | Horseradish, Variegated |
| Artemisia 'Huntington Garden' | Wormwood |
| Artemisia lac. 'Guizho' | White Mugwort |
| Artemisia lud. 'Valerie Finnis' | White Sage |
| Artemisia s. 'Silver Mound' | Wormwood |
| Artemisia v. 'Oriental Limelight' | Wormwood |
| Arum euxinum | Arum |
| Arum italicum | Arum |
| Aruncus aethusifolius | Goat's Beard |
| Aruncus d. 'Child of Two Worlds' | Goat's Beard |
| Aruncus dioicus | Goat's Beard |
| Asarum arifolium (Hexastylis) | Wild Ginger |
| Asarum canadense | Wild Ginger |
| Asarum caudatum | Wild Ginger |
| Asarum maximum 'Green Panda' | Wild Ginger |
| Asarum shuttleworthii (Hexastylis) | Wild Ginger |
| Asarum splendens (Hexastylis) | Wild Ginger |
| Asarum virginica (Hexastylis) | Wild Ginger |
| Asclepias 'Ice Ballet' | Milkweed |
| Asclepias incarnata 'Cinderella' | Milkweed, Swamp |
| Asclepias incarnata 'Soul Mate' | Milkweed |
| Asclepias tuber?sa | Butterfly Milkweed |
| Asplenium ebenoides | Dragon Tail Fern |
| Asplenium platyneuron | Ebony Spleenwort Fern |
| Asplenium scolopendrium 'Cristata' | Crested Harts Tongue Fern |
| Asplenium scolopendrium 'Laceratum Kaye' | Kaye's Harts Tongue Fern |
| Asplenium trichomanes | Maidenhair Spleenwort |
| Astelia chathamica 'Silver Spear' | Silver Spear |
| Aster alpinus 'Happy End' | Aster |
| Aster d. 'Wood's Light Blue' | Aster |
| Aster d. 'Wood's Pink' | Aster |
| Aster l. 'Lady in Black' | Aster |
| Aster 'Monch' | Aster |
| Aster novae-angliae 'Purple Dome' | Aster |
| Aster novi-belgii 'Alert' | Aster |
| Aster novi-belgii 'Fellowship' | Aster |
| Aster novi-belgii 'Wood's Purple' | Aster |
| Aster 'Prince' | Aster |
| Astilbe a. 'Bressingham Beauty' | False Spirea |
| Astilbe a. 'Bumalda' | False Spirea |
| Astilbe a. 'Fanal' | False Spirea |
| Astilbe c. 'Superba' | False Spirea |
| Astilbe c. 'Visions' | False Spirea |
| Astilbe j. 'Montgomery' | False Spirea |
| Astilbe japonica 'Peach Blossom' | False Spirea |
| Astilbe simplicifolia 'Pink Lightning' | Ostrich Plume |
| Astilbe 'Sprite' | False Spirea |
| Astilbe thunbergii 'Straussenfeder' | Ostrich Plume |
| Astilbe 'White Gloria' | False Spirea |
| Astrantia 'Hadspen Blood' | Masterwort |
| Astrantia maj. hyb 'Rosensinfonie' | Masterwort |
| Astrantia maj. 'Sunningdale Variegated' | Masterwort |
| Astrantia major 'Alba' | Masterwort |
| Astrantia major 'Claret' | Masterwort |
| Astrantia major 'Lars' | Masterwort |
| Astrantia major 'Snowstar' | Masterwort |
| Athyrium augustum forma rubellum 'Lady in Red' | Lady in Red |
| Athyrium 'Branford Beauty' | Branford Beauty Lady Fern |
| Athyrium filix-femina | Uncrested Lady Fern |
| Athyrium filix-femina ‘Dre’s Dagger’ | Lady Fern, Crested Cruciate |
| Athyrium filix-femina 'Encourage' | Lady Fern, Crested |
| Athyrium filix-femina 'Frizelliae' | Tatting Fern |
| Athyrium filix-femina 'Vernoniae Cristatum' | Miss Vernon's Crested Lady Fern |
| Athyrium filix-femina 'Victoria Selection' | Lady Fern |
| Athyrium n. var. pictum ‘Ursula’s Red’ | Painted Fern |
| Athyrium niponicum 'Ghost' | Ghost Fern |
| Athyrium niponicum 'Silver Falls' | Painted Fern |
| Athyrium niponicum var. pictum | Japanese Painted Fern |
| Athyrium nipponicum 'Pictum-Applecourt' | Applecourt Crested Japanese Painted Fern |
| Athyrium otophorum | Auriculate Lady Fern |
| Athyrium pycnocarpon | Narrow-leaved Spleenwort |
| Aubrieta 'Rokey's Purple' | Rock Cress |
| Ballota nigra 'Archer's Variety' | Variegated Horehound |
| Baptisia australis | False Indigo |
| Baptisia 'Purple Smoke' | False Indigo |
| Belamcanda chinensis | Blackberry Lily |
| Belamcanda chinensis 'Freckle Face' | Blackberry Lily |
| Belamcanda 'Hello Yellow' | Blackberry Lily |
| Bergenia cordifolia 'Tubby Andrews' | Pigsqueak, Variegated |
| Bergenia cordifolia 'Winterglut' | Pigsqueak |
| Bergenia Hybr. 'Magic Giant' | Pigsqueak |
| Blechnum spicant | Deer Fern |
| Bletilla striata (Hyacinthina) | Chinese Ground Orchid |
| Bletilla striata 'Alba' | Chinese Ground Orchid |
| Bletilla striata 'Innocence' | Chinese Ground Orchid |
| Botanical | Common |
| Brunnera 'Hadspen Cream' | Brunnera |
| Brunnera m. 'Jack Frost' | Brunnera |
| Brunnera m. 'Langtrees' | Brunnera |
| Brunnera macrophylla 'Looking Glass' | Brunnera |
| Buddleia d. 'Black Knight' | Butterfly Bush |
| Buddleia d. 'Harlequin' | Butterfly Bush |
| Buddleia d. 'Nanho Blue' | Butterfly Bush |
| Buddleia d. 'Pink Delight' | Butterfly Bush |
| Buddleia d. 'White Profusion' | Butterfly Bush |
| Buddleia davidii 'Orchid Beauty' | Butterfly Bush |
| Buddleia x w. 'Honeycomb' | Butterfly Bush |
| Bukniczia cabulica (Aeonopsis) | Bukniczia |
