Alpinia formosana Alpinia zerumbet
Alpinia zerumbet 'Variegata' Alstroemeria x 'Freedom'
Alstroemeria x 'Jazze Rose Frost' Alstroemeria x 'Petite Plum'
Alstroemeria x 'Sweet Laura' Alstroemeria x 'Walter Fleming'
Alstroemeria aurea Alstroemeria haemantha
Alstroemeria hookeri Alstroemeria ligtu
Alstroemeria psittacina Alstroemeria psittacina 'Variegata'
Alternanthera 'Red Threads' Alternanthera 'Snow Queen'
Alternanthera dentata 'Party Time' Alternanthera dentata 'Rubiginosa'
Alternanthera dentata 'Ruby' Alternanthera ficoidea
Alternanthera ficoidea 'Big Red' Alternanthera ficoidea 'Brilliant'
Alternanthera ficoidea 'Party Time' Althaea officinalis
Alyssum montanum 'Mountain Gold' Amaranthus x 'Aurora Summer Poinsettia'
Amaranthus x 'Intensa Pink' Amaranthus x 'Perfecta'
Amaranthus x 'Ritz Rocket' Amaranthus x 'Towers Mix'
Amaranthus caudatus Amaranthus caudatus 'Dreadlocks'
Amaranthus caudatus 'Viridis' Amaranthus cruentus
Amaranthus cruentus 'Golden Giant' Amaranthus erythoflexosa
Amaranthus hypochondriacus Amaranthus hypochondriacus 'Burgundy'
Amaranthus hypochondriacus 'Pygmy Torch' Amaranthus retroflexus
Amaranthus tricolor 'Aurora' Amaranthus tricolor 'Illumination'
Amaranthus tricolor 'Molten Fire' Amaranthus tricolor 'Splendens Perfecta'
Amaranthus tricolor var. salicifolius Amaranthus tricolor var. salicifolius 'Early Splendor'
Amaranthus tricolor var. salicifolius 'Flaming Fountain' Amaranthus tricolor var. salicifolius 'Joseph's Coat'
Amaryllis belladonna Amaryllis belladonna 'Alba'
Amauropelta tetragona Ambrosia artemisiifolia
Ambrosia deltoidea Ambrosia trifida
Ammi majus Ammi visnaga 'Green Mist'
Ammobium alatum 'Bikini' Amorpha canescens
Amorphophallus rivieri Amsonia grandiflora
Amsonia hubrichtii Amsonia rigida
Amsonia tabernaemontana Amsonia tabernaemontana var. montana
Amsonia tabernaemontana var. salicifolia Anacyclus pyrethrum
Anacyclus pyrethrum var. depressus Anagallis monellii 'Blue Light'
Ananas comosus Ananas comosus 'Variegatus'
Anaphalis margaritacea Anchusa azurea 'Loddon Royalist'
Anchusa capensis Anchusa capensis 'Blue Angel'
Andrachne colchica 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