Actaea racemosa, commonly called black cohosh, forms an upright clump of large divided green leaves. Branched racemes of tiny creamy-white flowers rise well above the foliage from summer into early fall. Mature plants reach about 120 to 180 cm tall and 60 to 120 cm wide.
Grow this woodland perennial in partial or full shade and cool, moist soil enriched with organic matter. Water thoroughly during dry weather and shelter the tall flower stems from strong wind. The plant is harmful if eaten, and gloves and protective equipment are advised when handling it.