Cimicifuga Racemosa Seeds

Cimicifuga racemosa, commonly known as Black Cohosh, is a graceful perennial prized for its tall, elegant flower spikes and medicinal properties.

 

The Latin name Cimicifuga is derived from the Greek words kimis (bedbug) and fugare (to drive away), referring to the plant’s reputed ability to repel insects.

 

The species name racemosa refers to the plant’s raceme-like clusters of white flowers. Black Cohosh is not only appreciated for its striking appearance but also its use in herbal medicine, particularly for supporting women's health.

 

This perennial produces long, creamy white, bottlebrush-like blooms that appear in late summer to early autumn, making it an excellent addition to the back of borders or woodland gardens. It thrives in shaded or semi-shaded spots, where its elegant stature and dramatic flower spikes create a soft, vertical accent in the garden. Black Cohosh is also known for its ability to attract pollinators such as bees and butterflies.

 

This sturdy plant grows to a height of 1.2–1.5 metres and prefers moist, well-drained soil with a slightly acidic to neutral pH. Cimicifuga racemosa is particularly well-suited for shaded woodland areas or garden corners where other plants may struggle.

 

Seed Qty: Approx. 50

 

Sow: August - November (indoors) or August - September (outdoors)

Germination: 21 - 28 days

Soil: Well-drained, moist, slightly acidic to neutral pH

Height: 1.2 - 1.5 m

Flowering: June - August 

Companion Plants: Ferns, Hostas, Astilbes

Avoid Planting With: Invasive groundcovers

 

Water regularly, particularly during dry spells, to keep the soil consistently moist. After flowering, deadhead spent blooms to keep the plant looking tidy, although some prefer to leave the seed heads for winter interest.

 

Sowing Instructions

Indoors:

Sow seeds in seed trays or pots filled with moist, well-drained compost from August to November. Lightly cover the seeds and maintain a temperature of 18–21°C. Keep the soil consistently moist but not waterlogged. Once seedlings are large enough, transplant them into individual pots or directly into the garden.

 

Outdoors:

Sow directly into well-prepared soil from August- September, pressing seeds gently into the soil and keeping it moist until germination occurs. Thin seedlings to 45cm apart once they have established.

 

Cimicifuga racemosa is perfect for woodland, shaded areas, or mixed borders, offering a touch of elegance with its towering floral spikes. Its graceful beauty and beneficial medicinal properties make it a valuable addition to any garden.

 

Johnsons Seed Range