If you want dramatic height and late-season sparkle in a shade garden, Actaea racemosa (Black Cohosh) delivers. This upright, rhizomatous perennial forms a handsome mound of boldly cut foliage, then sends up tall, wand-like spikes of tiny creamy-white flowers that read as airy white plumes from a distance.

Plant it where you can enjoy the vertical accent at the back of a woodland border, along a shady fence line, or tucked among ferns and hostas. Mature plants typically reach about 48-72 inches tall and spread roughly 24-48 inches, so give it room and place it where the stems are sheltered from strong wind.

Black Cohosh is happiest in consistently moist, humus-rich soil. Aim for partial shade to full shade; a bit of gentle morning sun can help flowering, while harsh afternoon sun and dry soil can lead to stress. Mulch to keep roots cool and moisture steady, and water during dry spells, especially while plants are establishing.

For the cleanest look, cut back spent stems after flowering or leave seedheads for winter interest and then tidy in late winter. Once settled, this long-lived perennial is a dependable, native choice that supports pollinators and brings a refined, architectural presence to shaded plantings.

Specifications

• Cold hardiness zone: 3-8 (-40 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• Light: Part sun   Shade
• Mature height: 48-72"
• Spread: 24-48"
• Tolerant of: Deer
• Attracts: Butterflies, Hummingbirds
• Good for borders & edging: Yes
• Native to the U.S.: Yes

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