University of Illinois Extension
Directory of Wildflowers - University of Illinois Extension

Directory of Wildflowers

Blue Cohosh
Caulophyllum thalictroides

Blue Cohosh
Blue Cohosh

Quick Profile

Exposure
Full Shade
Partial Sun/Shade
 
Mature Height
1 - 3 Feet
 
USDA Hardiness Zones
3 - 8 
 
Native To:
Illinois
Indiana
Iowa
Michigan
Missouri
Ohio
Wisconsin
 
Soil Conditions
Moist, Well-Drained
 
Bloom Color
Not of Interest
 
Bloom Season
April - June
 

Features

Small, yellow-green to brown, six-pointed flowers (not showy), followed by deep blue berries.

Culture

Partial to full shade; consistently moist soil.

Notes

Found in moist woods. Can spread slowly by rhizomes to form colonies.