Achillea millefolium
Actaea pachypoda
Actaea rubra
Actaea rubra f. neglecta
Agastache foeniculum
Ageratina altissima (syn. Eupatorium rugosum)
Allium schoenoprasum
Anaphalis margaritacea
Anemonastrum canadense (syn. Anemone canadensis)
Anemone multifida
Anemone virginiana
Angelica atropurpurea