Plant types and subtypes: Perennials
Light Requirements: part-shade, shade
Water Use: medium
Soil Moisture: moist
Soil Description: acid, neutral, rich, loam
Bloom Time: April, May
Bloom Color: yellow, green, brown
Leaf Color: green, blue-green
Hardiness Zone: 3, 4, 5, 6, 7
Additional Tags: berries, colonizing, deer resistant, fall interest, ornamental foliage, poisonous, shade garden plant, showy fruit, woodland plant
Pricing & Availability
Caulophyllum thalictroidesAlso known as:
The blue cohosh is not as much valued for its inconspicuous, greenish-brown flowers, as it is for its blue-green compound foliage and showy, blue berry-like fruit which appear in summer and give the plant interest well into fall.
Caulophyllum thalictroides grows in neutral to slightly acidic soil, rich in organic matter. It will prefer a shady spot where it will not be allowed to dry out in summer. It is best used in groupings where it will slowly colonize by means of rhizomes. It has a short bloom time in April or May. Zones 3-7
Propagated by division. Propagation from seed is slow, as seedlings may take up to 4 years to produce flowers.
All parts of the plant may cause skin irritation. Berries can be toxic if ingested and are best kept away from children.
Native Range & Classification
Recorded County Distribution: USDA data
AL, AR, CT, DE, GA, IA, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, NC, ND, NE, NH, NJ, NY, OH, OK, PA, RI, SC, SD, TN, VA, VT, WI, WV
USDA Endangered Status:
- Threatened: RI
|Species||Caulophyllum thalictroides||blue cohosh|