Caulophyllum thalictroides
[Blue Cohosh]

Size (ships bareroot) - Bulb or rootlet

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Height Light
18 - 24 in. Shade Spring Yellow 4 - 8

The plant emerges from the soil in early spring. The shoots are purplish blue and soon give way to bluish green leaves. The leaves are compound and rounded at the tip. The flowers are brownish yellow - bloom in May, and then produce striking blue fruits which resemble small grapes and provide good ornamental interest into fall after foliage decline has occurred. The seeds and roots are poisonous.


Best grown in shady woodland areas in rich, moist, neutral to slightly acidic soils. Needs consistently moist soils that do not dry out. Plants may be grown from seed, but usually will not flower until the third or fourth year. May be divided, but established plants are generally best left undisturbed. Can spread very slowly by rhizomes over time to form colonies.

Other Attributes:
Pollinator Friendly
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