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Perennials, Weeds > Caulophyllum > Caulophyllum thalictroides > Caulophyllum thalictroides

Caulophyllum thalictroides


Blue Cohosh




Origin:  Eastern North America.
Family
Berberidaceae
Genus
Caulophyllum
Species
thalictroides
Category
Perennials, Weeds
USDA Hardiness Zone
3 - 8
Canadian Hardiness Zone
1a - 7a
RHS Hardiness Zone
H5 - H7
Temperature (°C)
-40 - (-9)
Temperature (°F)
-40 - 15
Height
60 cm
Spread
30 cm
Photographs
Description and Growing Information
Flowering Period
April
Landscape
Wild or woodland garden.
Cultivation
Does best in deep shade, in damp, light, humus-rich soil.
Growth
Fast
Leaf Description
Leaves are 3-lobed to base, with 3-lobed, pointed leaflets.
Flower Description
Flowers are yellow, 12 mm across, and appear before leaf is fully developed.
Fruit Description
Seeds grow to 1.2 cm in diameter, with a rich blue coat.
Notable Specimens
Joany’s Woods, West Williams, Middlesex County, Ontario, Canada.
Propagation
Propagate through division in spring or after flowering, or by seed, sown when ripe, in a cold frame.
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