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Black Cohosh growing in a garden

How to grow black cohosh

Actaea racemosa

When to plant black cohosh

Black cohosh sends up tall white flower spikes from late spring into summer (NC State: May to August) above ferny foliage. Plant or divide in spring or fall in moist, humus-rich shade; it is slow to establish.

Black Cohosh is timed by season rather than your frost dates, so the planting calendar does not generate ZIP-specific dates for it. Check the cited sources below to fine-tune for your area.

Growing conditions

Lifecycle
Perennial
Sun
Shade
Soil pH
6 to 8

Sources

Last updated .