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Blue cohosh plant with green foliage from TN Nursery
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Blue Cohosh

Attractive foliage throughout the season

Low maintenance, resilient to pests

Thrives in shady garden areas

$6.59

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The Blue Cohosh is a perennial herb with blue-green foliage, whose small flowers dry out to become pea-sized, blue, edible berries. It thrives in deciduous woodlands, specifically in moist coves and hillsides. 

The flowers and eventual berries are often overshadowed by the lush, plentiful foliage, which can fill out any area in your woodland garden. As a slow-growing perennial, it takes time to establish itself in any habitat, but then enjoys a long life in its quiet, undisturbed patch of earth.

Plant Details of Blue Cohosh 

Family: Berberidaceae

Light Requirement: Shade, Partial Sun

Water Needs: Moderate - Semi-heavy

Height: 1-2 ft

Spread: 6 in-1 ft

Growth Rate: Slow

Soil Preference: Moist, Fertile, Loamy

Bloom Time: Spring

Flower Color: Dark purple

Wildlife Value: Attracts pollinators, Mice, and Caterpillars

Notable Characteristics: Blue Cohosh Plant

Blue Cohosh can be identified mainly by its stalks and leaves. A thin, single stalk grows erect from the ground, with equally thin branches growing off of it and branching into three leaves. The leaves vary in size, with round edges that come to a point at the end.

They are thin and silky, and their blue-green color is eye-catching in large patches. The six petals of the flower are a dark purple-brown with yellow stamens that bloom in the spring, but dry out and curl into themselves before falling off in the summer. Bright blue berries grow in their place, which add a beautiful, bold pop of color to the lush green leaves.

This plant is an important North American native because it is fully edible. The seeds can be a substitute for coffee, and the root is commonly used to treat pain from menstruation or even to return the reproductive cycle to a normal pattern. You can make the berries into a tincture to treat arthritis or other body aches and combine them with ginger, turmeric, or Solomon's seal to help your digestion.

Landscape Uses and Maintenance for Blue Cohosh

Blue Cohosh Plant is a resilient and long-lived plant that thrives among the oaks and maples in hardwood forests of the eastern United States. It grows especially well among other natives, making it a great addition to your native garden!

Blue Cohosh's nectar and pollen attract bees and other insects, while caterpillars love to make their homes on the lush foliage. Mice often enjoy eating the berries and help distribute the seeds through animal dispersal. The small flowers and berries often go unnoticed among the full leaves, but this steadfast plant is a beautiful, humble addition to any woodland area.

Where to plant blue cohosh?

Blue Cohosh grows best in partial to full shade with rich, moist, well-drained soil. It thrives in woodland or shaded garden settings that mimic its natural forest habitat. With the right spot, it produces graceful foliage and clusters of blue berries that add charm to shaded landscapes.

How tall do blue cohosh plants get?

Blue Cohosh plants typically grow 1 to 3 feet tall. They feature attractive, blue-green foliage and small yellow-brown flowers in spring. Their compact size and elegant leaves make them ideal for shaded garden areas or woodland settings.

Where is blue cohosh native to?

Blue Cohosh is native to eastern North America. It naturally grows in rich, shaded woodlands from Canada down through the eastern and central United States. Its preference for cool, moist forest floors makes it a classic native plant for shaded gardens.

Exposure

Blue Cohosh thrives in partial to full shade, mirroring its natural woodland habitat. It prefers dappled sunlight under a canopy of trees, making it ideal for shaded garden areas with indirect or filtered light.

Height at Maturity

Over 12"

Usage

Shade Plant

Shipped As

Bare-root

Ships

Planting Zones

3-7

How To Grow & Care Tips

Caring Tips

How do I care for my Blue Cohosh?

Each box contains detailed care instructions and information about your product. But here's the basics.

Care Tips

Blue Cohosh grows best in well-drained, nutrient-rich soil with consistent moisture. Use mulch to retain dirt and moisture and protect roots. Water regularly during dry periods, but avoid waterlogged conditions. Trim dead foliage to promote healthy growth and prevent disease.

Light Requirements

Blue Cohosh thrives in partial to full shade, mirroring its natural woodland habitat. It prefers dappled sunlight under a canopy of trees, making it ideal for shaded garden areas with indirect or filtered light.

Hardy Planting Zones

3 • 4 • 5 • 6 • 7 • 8