Abbotswood Cinquefoil 
Acaena splendens 
Acorn Fig 
Alchemilla orbiculata 
Alchemilla xanthochlora 
Alder buckthorn 
Allegheny blackberry 
Almond 
Almond-leaved pear 
Alphitonia excelsa 
Alpine Rose 
Amelanchier canadensis 
American plum 
American red raspberry 
Amygdalus orientalis 
Amygdalus ramonensis 
Andean Raspberry 
Antiaris 
Apache plume 
Apple 
Apple Rose 
Asian Cotoneaster 
Autumn olive 
Azarole