Blue Cohosh is a spring wildflower of rich eastern forests, producing small yellowish-green flowers followed by striking deep blue berries that resemble blueberries but are toxic. It was used medicinally by indigenous peoples for a variety of purposes. The species has declined in many areas due to over-harvesting and forest fragmentation.
Best time to see a Blue Cohosh
The best time to see a Blue Cohosh is April–May, when about 62% of U.S. sightings happen, based on 10,383 research-grade iNaturalist observations.
Not certain it is a Blue Cohosh? What plant is this? walks through what to check first and the lookalikes that catch people out.
Recent Blue Cohosh sightings near you
Live, research-grade observations from iNaturalist. Allow location to center the map on you.
Spotted a Blue Cohosh?
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