Ananas comosus Ananas comosus 'Variegatus'
Anaphalis margaritacea Anchusa azurea 'Loddon Royalist'
Anchusa capensis Anchusa capensis 'Blue Angel'
Andrachne colchica Andromeda polifolia 'Blue Ice'
Andromeda polifolia 'Grandiflora Compacta' Andropogon gerardii
Androsace lanuginosa Anemone blanda
Anemone blanda 'Blue Shades' Anemone canadensis
Anemone coronaria Anemone coronaria 'Mr. Fokker'
Anemone coronaria 'The Bride' Anemone hupehensis
Anemone hupehensis 'Alice' Anemone hupehensis 'September Charm'
Anemone hupehensis var. japonica Anemone hupehensis var. japonica 'Party Dress'
Anemone hupehensis var. japonica 'Prince Henry' Anemone x hybrida 'Alba'
Anemone x hybrida 'Bressingham Glow' Anemone x hybrida 'Honorine Jobert'
Anemone x hybrida 'Margarete' Anemone x hybrida 'Pamina'
Anemone x hybrida 'Prince Henry' Anemone x hybrida 'Whirlwind'
Anemone magellanica Anemone multifida 'Rubra'
Anemone narcissiflora Anemone nemorosa
Anemone sylvestris Anemone sylvestris 'Elise Feldman'
Anemone tomentosa 'Robustissima' Anemone virginiana
Anemone vitifolia Anemonella thalictroides
Anemonopsis macrophylla Anemopaegna chamberlaynii
Anethum graveolens 'Fernleaf' Angelica archangelica
Angelica gigas Angelonia angustifolia 'AngelMist™ Purple Stripe'
Angelonia angustifolia 'Carita Deep Pink' Angelonia angustifolia 'Carita Purple'
Angelonia angustifolia 'Carita White' Angelonia angustifolia 'Serena Purple'
Angelonia angustifolia 'Serena White' Angophora cordifolia
Angophora hispida Angophora intermedia
Angraecum sesquipedale Anguloa clowesii
Anguloa hybrida Anguloa uniflora
X Angulocaste X Angulocaste olympus 'Chadds Ford'
Anigozanthos flavidus Anigozanthos flavidus 'Red Cross'
Anigozanthos manglesii Anisacanthus thurberi
Anisodontea capensis Anisodontea x hypomandarum
Anisodontea x hypomandarum 'Tara's Pink' Anisodontea lateritum
Annona glabra Annona muricata
Annona reticulata Anomatheca laxa
Antennaria dioica 'Rubra' Antennaria parvifolia
Antennaria rosea Anthemis punctata ssp. cupaniana
Anthemis tinctoria Anthemis tinctoria 'Kelwayi'
Anthemis tinctoria 'Moonlight' Anthemis tinctoria 'Sauce Hollandaise'
Anthemis tinctoria 'Susanna Mitchell' Anthemis tinctoria 'Wargrave'
Anthriscus cereifolium Anthriscus sylvestris 'RavensWing'
Anthurium x 'Lady Jane' Anthurium andraeanum
Anthurium andraeanum 'Kozuhara' Anthurium x ferrierense
Anthurium jenmannii Anthurium scherzerianum
Anthurium superbum Anthyllis vulneraria ssp. coccinea
Antigonon leptopus Antirrhinum majus
Antirrhinum majus 'Chandelier Primrose Vien' Antirrhinum majus 'Crown Light Mauve'
Antirrhinum majus 'Little Darling' Antirrhinum majus 'Sonnet Crimson'
Antirrhinum majus 'White' Antirrhinum majus 'Yellow'