Adam-and-Eve Arum maculatum
African Wonder Tree Ricinus communis
Alocasia Alocasia spp.
Aloe Aloe vera
Amaryllis Amaryllis spp.
Ambrosia Mexicana Chenopodium botrys
American Bittersweet Celastrus scandens
American Holly Ilex opaca
American Mandrake Podophyllum peltatum
American Yew Taxus canadensus