Black Cohosh

About Black Cohosh

Black Cohosh is a majestic architectural plant that commands attention in the woodland garden with its towering, candle-like flower spikes. Reaching heights of four to six feet, and occasionally up to eight feet under ideal conditions, this perennial produces deeply cut, dark green foliage that remains attractive throughout the growing season. From mid to late summer, its spectacular white racemes bloom, opening from bottom to top and emitting a faint, sweet fragrance that attracts a wide array of pollinators, including bumblebees and butterflies. Native to the rich, moist forests of eastern North America, Black Cohosh is perfectly adapted to partial or full shade and humus-rich soils. It is particularly valued in ecological landscaping as a larval host for the Appalachian Azure butterfly. To grow successfully, ensure the soil remains consistently moist and rich in organic matter, as it does not tolerate drought well. Its imposing height makes it an ideal backdrop for shorter shade-loving perennials like ferns and wild ginger.