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perennial

Black Cohosh

Actaea racemosa

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Black Cohosh (Actaea racemosa) at Minor's Garden Center

Black Cohosh in bloom

Black Cohosh in bloom

(Photo courtesy of NetPS Plant Finder)

Black Cohosh (Actaea racemosa) at Minor's Garden Center

Black Cohosh flowers

Black Cohosh flowers

(Photo courtesy of NetPS Plant Finder)

Plant Height:  4 feet

Flower Height:  8 feet

Spread:  24 inches

Sunlight:  partial shade  full shade 

Hardiness Zone:  3a

Other Names:  Black Snakeroot, American Bugbane, Cimicifuga

Group/Class:  Native

Description:

A native perennial presenting numerous spikes of small, white, fragrant flowers in late summer to early fall; needs a location sheltered from strong winds; perfect for a shady, woodland garden

Ornamental Features

Black Cohosh features bold spikes of fragrant white flowers rising above the foliage from mid summer to early fall. The flowers are excellent for cutting. Its attractive serrated compound leaves emerge burgundy in spring, turning dark green in color with prominent deep purple tips throughout the season. The brown fruits are carried on spikes from late summer to late winter.

Landscape Attributes

Black Cohosh is an herbaceous perennial with tall flower stalks held atop a low mound of foliage. Its relatively coarse texture can be used to stand it apart from other garden plants with finer foliage.

This is a relatively low maintenance plant, and should be cut back in late fall in preparation for winter. It has no significant negative characteristics.

Black Cohosh is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use
  • Naturalizing And Woodland Gardens

Planting & Growing

Black Cohosh will grow to be about 4 feet tall at maturity extending to 8 feet tall with the flowers, with a spread of 24 inches. It tends to be leggy, with a typical clearance of 1 foot from the ground, and should be underplanted with lower-growing perennials. It grows at a slow rate, and under ideal conditions can be expected to live for approximately 10 years. As an herbaceous perennial, this plant will usually die back to the crown each winter, and will regrow from the base each spring. Be careful not to disturb the crown in late winter when it may not be readily seen!

This plant does best in partial shade to shade. It prefers to grow in moist to wet soil, and will even tolerate some standing water. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. This species is native to parts of North America. It can be propagated by division.

Sizes Available:

5.5" CONT $10.99

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Garden  Naturalizing 
Applications
Flowers  Fruit  Foliage Color  Winter Value 
Ornamental Features