Blue Cohosh, Papooseroot
Caulophyllum thalictroides

Family: Berberidaceae (bear-ber-id-AY-see-ee) (Info)
Genus: Caulophyllum (kaw-loh-FIL-um) (Info)
Species: thalictroides (thal-ik-TROY-deez) (Info)

Category:

Perennials

Height:

18-24 in. (45-60 cm)

Spacing:

12-15 in. (30-38 cm)

Hardiness:

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

Sun Exposure:

Light Shade

Danger:

N/A

Bloom Color:

Chartreuse (Yellow-Green)

Green

Bloom Time:

Late Spring/Early Summer

Foliage:

Herbaceous

Other details:

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Non-patented

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

From seed; direct sow outdoors in fall

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

Calvert City, Kentucky

Bridgewater, Massachusetts

Panama, New York

Elizabeth City, North Carolina

Bowling Green, Ohio

Cincinnati, Ohio

Mc Minnville, Tennessee

Viola, Tennessee

show all

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Neutral

On Feb 2, 2010, purplekitty from Wildomar, CA wrote:

Used to induce labor. DO NOT ingest if pregnant unless certified health practitioner is trying to induce contractions.

Positive

On Jun 4, 2007, gregr18 from Bridgewater, MA (Zone 6b) wrote:

It's not uncommon to see this plant for sale (in capsulated form of course) at a drug store as a remedy for women's reproductive problems. It has long been used in traditional Native American medicine as a means of easing the process of childbirth and menstruation.