Caulophyllum thalictroides
Blue Cohosh
Blue Cohosh is a native perennial which grows on strong, upright stems. It is valued for its lacy, ternately-compound, blue-green foliage and its erect clusters of blue, fruit-like seeds. Leaves appear at mid-stem, emerging a smoky blue in spring and turning bluish-green at maturity. Young plants are covered with a whitish, waxy bloom. Inconspicuous, brownish-green to yellowish-green flowers (1/2" diameter), each with six pointed sepals, appear in spring. Flowers give way in summer to attractive blue berry-like seeds which resemble small grapes and provide good ornamental interest into fall after foliage decline has occurred.
Additional Information:
Height |
![]() |
Spread |
![]() |
Bloom/Seasonal Color |
USDA Hardiness Zone 3-8
Home Owner Growing and Maintenance Tips:

Characteristics & Attributes

Hydrologic Designation
|
Season of Interest
|
Soil Moisture
|
||||||
Sun Exposure
|
USFS MO Ecological Map |