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 Mountain Ash
Anacahuita Ana-tree
Angel's Trumpet Variegated Peach Angel's Trumpet: Brugmansia 'Pink'
Angel's Trumpet: Brugmansia 'Tricolor' Angel's Trumpet: spp.
Anglojapanese Yew (spp.) Anglojapanese Yew 'Burr'
Anglojapanese Yew 'Hatfieldii' Anglojapanese Yew 'Vermeulen'
Anise Anise Magnolia (spp.)
Anise Magnolia 'Miss Jack' Anise, Chinese
Anise, Henry 'Ann Rutledge' Sugar Maple
Annatto Antartic Beech
'Aoba jo' Japanese Maple 'Aoyagi' Japanese Maple
Apache Pine 'Apalachee' Crapemyrtle
Aphananthe 'Apollo' Magnolia
'Appalachia' Eastern Redbud Apple Hawthorn
Apple Pear Apple Serviceberry (spp.)
Apple Serviceberry 'Autumn Brilliance' Apple Serviceberry 'Cole's Select'
Apple Serviceberry 'Princess Diana' Apple Serviceberry 'Robin Hill'
Apple Tree Apple, Common
Apple, Cultivated Apple, Dwarf
Apple, Malay Apple, Mammee
Apple, Rose Apple, Scrub
Apple: malaccense, Rose Apple-tree
Apricot (spp.) Apricot 'Harcot'
Apricot 'Sweetheart™' Apricot, Desert
Apricot, Japanese Flowering (spp.) Apricot, Japanese Flowering 'Rosebud'
Apricot, Japanese Flowering 'Rosemary Clarke' Apricot, South American
Aralia, Castor Aralia, False
Aralia, Spider Araucaria, Biramule
Araucaria, Coast Araucaria, Mountain
Araucaria, Mueller Araucaria, Narrow-leaf