'Ames' Kalm St. Johnswort Amsonia, Willow (spp.)
Anacahuita Anacheilium, The Lines Petal
'Andelyensis' Atlantic White Cedar Anderson Wolfberry
Anderson's Desert Thorn Anderson's Holly Fern
Andropogon Grass Anemone, Bush (spp.)
Anemone, Canada Anemone, Cut-leaf 'Rubra'
Anemone, Narcissus Anemone, Rue (spp.)
Anemone, Tree (spp.) Anemone, Virginia
Angel Flower 'AngelMist™ Purple Stripe' Angelica Tree, American
Angelita Daisy 'AngelMist™ Purple Stripe' Summer Snapdragon
Anise Anise Hyssop 'Golden Jubilee'
Anise Mint 'Golden Jubilee' Anise, Florida (spp.)
Anise, Purple (spp.) Anise, Star (spp.)
Anise: floridanum alba, Purple 'Ann Bidwell' Summer Sweet
'Ann Rutledge' Sugar Maple 'Annabelle' Smooth Hydrangea: arborescens
'Anna's Magic Ball™' American Arborvitae Annual Bluegrass
Annual Coreopsis (spp.) Annual Coreopsis 'Mardi Gras'
Annual Fleabane Annual Phlox (spp.)
Annual Ragweed Antelope Horns
Apache Plume 'Apollo' Oregon Holly Grape
Apostle Plant 'Appalachia' Eastern Redbud
Appalachian Tea 'Apple Blossom' Moss Phlox
Apple Hawthorn Apricot Vine
Apricot, Desert Aquatic Morning Glory