'Ames' Kalm St. Johnswort 'Amethyst Falls' American Wisteria
Amethyst Flower 'Blue Troll' Amethyst Flower 'Major'
'Amethyst' Japanese Wisteria 'Amethyst Myst' Alumroot: Heuchera
'Amethystina' Formosa Toad Lily 'Amethyst™' Snowberry
'Ami Schott' Lilac 'Amity Wilson' Japanese Camellia
Amole Amsonia, Willow (spp.)
Amur Choke Cherry Amur Corktree (spp.)
Amur Corktree 'Macho' Amur Honeysuckle
Amur Maackia Amur Maackia: amurensis
Amur Maple (spp.) Amur Maple 'Acontifolium'
Amur Maple 'Green Cascade' Amur Maple 'Vitifolium'
Amur Mountain Ash Amur Peppervine (spp.)
Amur Peppervine 'Elegans' 'Amy Cotta' Rhododendron: (n)
'Anabel' Lilac: hyacinthiflorahybrid Anacahuita
Anacheilium, The Lines Petal Ana-tree
Anceps Bamboo 'Andelyensis' Atlantic White Cedar
Anderson Wolfberry Anderson's Desert Thorn
Anderson's Holly Fern 'Andreana' Waterlily
Andromeda, Chinese Andromeda, Japanese (spp.)
Andromeda, Japanese 'Compacta' Andromeda, Japanese 'Dorothy Wycoff'
Andromeda, Japanese 'Little Heath' Andromeda, Japanese 'Mt. Fire'
Andromeda, Japanese 'Valley Rose' Andromeda, Japanese Variegated
Andropogon Grass Anemone, Autumn 'Robustissima'
Anemone, Bush (spp.) Anemone, Canada
Anemone, Chinese (spp.) Anemone, Chinese 'Alice'
Anemone, Crown (spp.) Anemone, Crown 'Mr. Fokker'
Anemone, Crown 'The Bride' Anemone, Cut-leaf 'Rubra'
Anemone, European Wood (spp.) Anemone, Greek (spp.)
Anemone, Hardy Grape Leaf 'Robustissima' Anemone, Hybrid 'Pamina'
Anemone, Hybrid 'Prince Henry' Anemone, Hybrid 'Whirlwind'
Anemone, Narcissus Anemone, Poppy (spp.)
Anemone, Poppy 'Mr. Fokker' Anemone, Poppy 'The Bride'
Anemone, Rue (spp.) Anemone, Snowdrop (spp.)
Anemone, Snowdrop 'Elise Feldman' Anemone, Tree (spp.)
Anemone, Virginia Anemone, Wood (spp.)
Anemone: vitifolia 'Angel Eyes' Hybrid Spiderwort
Angel Flower 'AngelMist™ Purple Stripe' Angel Flower 'Carita Deep Pink'
Angel Flower 'Carita Purple' Angel Flower 'Carita White'
Angel Flower 'Serena Purple' Angel Flower 'Serena White'
Angel Lily (spp.) Angel Lily 'Ellen Bosanquet'
Angel Wing Begonia (spp.) Angel Wing Jasmine
Angel Wings (spp.) Angel Wings 'Candidum'
Angel Wings 'F.M. Joyner' Angel Wings 'Rosebud'
Angel Wings: lindenii Angelica Tree (spp.)
Angelica Tree 'Silver Umbrella' Angelica Tree Variegated
Angelica Tree, American Angelica Tree, Japanese (spp.)
Angelica Tree, Japanese 'Silver Umbrella' Angelica Tree, Japanese Variegated
Angelica, Garden Angelica, Korean
'Angelina' Reflexed Stonecrop Angelita Daisy
'AngelMist™ Purple Stripe' Summer Snapdragon Angel's Hair
Angel's Trumpet (spp.) Angel's Trumpet Variegated Peach
Angel's Trumpet, Double Purple 'Ballerina Mix' Angel's Trumpet, Red
Angel's Trumpet: Brugmansia 'Pink' Angel's Trumpet: Brugmansia 'Tricolor'
Angel's Trumpet: metel (spp.) Angel's Trumpet: metel 'Flore Pleno'
Angel's Trumpet: spp.