Blue Cohosh

About Blue Cohosh

Blue Cohosh is a standout choice for the woodland garden, prized for its sophisticated blue-green foliage and striking cobalt-blue, berry-like seeds. This herbaceous perennial emerges in early spring with smoky-purple stems and lacy, delicate leaves that reach 1 to 3 feet in height. In April and May, it produces clusters of unique, greenish-yellow flowers that provide an early nectar source for small bees and flies. As the season progresses, the flowers give way to decorative seeds that persist into late summer, adding multi-season interest. Native to rich, moist deciduous forests across eastern North America, Blue Cohosh is an indicator of high-quality woodland habitats. It thrives in partial to full shade and rich, humusy soil that remains consistently moist. While it is a slow-growing species, it is remarkably long-lived and adds a touch of wild elegance to any shaded landscape. Please note that all parts of the plant, especially the seeds, contain alkaloids and should not be consumed.