Ageratina altissima (white snakeroot)

Allium aflatunense ‘Purple Sensation’ (purple sensation allium)

Allium atropurpureum (ornamental onion)

Allium christophii (star of Persia)

allium lusitanicum ‘Summer Beauty’ (allium ‘Summer Beauty’)

Allium sphaerocephalon (drumstick allium)

Amelanchier laevis (Allegheny juneberry)

Amorpha canescens (lead plant)

Amsonia ‘Blue Ice’ (blue star ‘Blue Ice’)

Amsonia hubrichtii (threadleaf blue star)