Actaea racemosa – Black Cohosh

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Actaea racemosa ( Black Coshosh ) is a perennial herb that is native to cold and temperate regions of eastern North America and is grown primarily for its medicinal roots and rhizomes. Black Cohosh thrives in shady gardens and produces striking white flowers that resemble fairy candles during late summer and early autumn.

Suitable for Cold and Temperate climates.

Actaea racemosa ( Black Coshosh ) is a perennial herb that is native to cold and temperate regions of eastern North America and is grown primarily for its medicinal roots and rhizomes. Black Cohosh thrives in shady gardens and produces striking white flowers that resemble fairy candles during late summer and early autumn.

Suitable for Cold and Temperate climates.

Black Cohosh and its medicinal roots and rhizomes have been used to by Native Americans to treat snakebites, lung problems and pain from childbirth. Today, it is widely used as a dietary supplement to assist with menopause and a range of other ailments such as mood swings and digestion issues.

Actaea racemosa is also commonly known as Bugbane, Black Bugbane, Black Snakeroot, Rattle-Top and Fairy Candle.

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Growth

Actaea racemosa is a perennial, shade plant that grow to a maximum height of around 1.8 metres (6 feet) and spreads no wider than 1.2m (4 feet). Black Cohosh grows deep green, finely divided foliage and then in the warmer months bears tall tapering racemes containing small white flowers. Up close the flowers smell unpleasant which gives the plant its less appealing common name Bugbane.

The basal leaves are up to 1 metre (3 feet) long and broad, forming repeated sets of three leaflets and have a coarsely serrated margin. The fruit is a dry follicle with one carpel which contains several seeds each.

Black Cohosh attracts plenty bees and butterflies into the summer garden and is ideal for gardeners looking for shade-loving flowers. Kept protected from strong winds, the plants are otherwise trouble-free.

Note: Germination instructions can be found in the ‘Germination Instructions Tab’ below. Upon purchase you will receive these detailed instructions via email so that you have a permanent record.

 

FAMILY:

Ranunculaceae

CLIMATE:

Cold, Temperate.

TEMPERATURE RANGE:

-20 to 30°C / -4 to 86°F

SOIL TYPE:

Moist, rich hummus.

LOCATION:

Full Shade or Semi-Shade

HEIGHT:

Up to 1.8 metres (6 feet)

WIDTH:

Up to 1.2 metre (4 feet)

pH:

5.0-6.0

GROWTH TYPE:

Perennial.

WATER REQUIREMENTS:

Medium

POLLINATION:

Pollinated by bees, butterflies & beetles.

MATURITY:

3-5 years.

GERMINATION RATES:

70-80%

GERMINATION TIME:

1-12 months.

GERMINATION DIFFICULTY:

Medium

SEEDS PER GRAM:

Approximately 350

MEDICINAL QUALITIES:

Yes

WEED POTENTIAL:

No

EDIBLE:

Roots & rhizomes only, the rest of the plant is toxic in large doses.

SEED STORAGE & VIABILITY:

Cold Storage at 4°C (Fridge) up to 1 year.

 

FACTS ABOUT ACTAEA RACEMOSA (Black Cohosh)

Actaea racemosa is native to the eastern side of North America. From as far north as Ontario in Canada where it can reach as low as -20°C/-4°F to the southern states of the United States such as Georgia and Arkansas where the temperatures can almost be considered sub-tropical.

Black Cohosh was the 2017 Wildflower of the year for Virginia’s Native Plant Society.

Black Cohosh works to balance hormones in women, helping to relieve menopausal symptoms such as hot flashes, moodiness, night sweats, headaches, and mental fog.

Warning: People who are allergic to aspirin, have liver problems, issues with seizures or have a high risk of blood clots or stroke should not take Black Cohosh.

Weight 0.5 kg
Dimensions 26 × 16 × .5 cm
Quantity

20 Seeds, 100 Seeds, 500 Seeds, Seedling

Germination Instructions

HOW TO GROW ACTAEA RACEMOSA (Black Cohosh)

 

Step 1

Start by placing some moist garden soil into a zip-lock bag and then mixing the seeds through. The seeds require a period of cold stratification prior to sowing. This will help replicate the natural conditions over winter that helps to break the seeds dormancy.

Seal the bag and place in the refrigerator for a period of around eight weeks. Check the soil once every two weeks and add some water to maintain a moist but not wet mixture.

If sowing in Autumn, skip the cold stratification process, follow the instructions in Step 2 and expose the seeds to the natural weathering of winter.

Step 2

Sow the seeds either directly into the ground (in a shaded position that is protected from strong winds) or into small pots of rich humus soil, ideally at a PH level of between 5 and 6. Cover the seeds lightly, moisten and leave in a position where the temperature will remain steady around 15°C/59°F.

If sowing directly into the ground, wait until after the last frost and when daytime temperatures consistently reach 20°C/68°F.

Moisten and leave in a warm, well lit or sunny position.

Ideal temperatures for germination are 15-20°C/59-68°F.

Black Cohosh seeds can be difficult to germinate and can take between 1-6 months. If seeds have not sprouted when winter arrives, continue to keep them moist but not wet. If they sprout before the last frost keep the seedlings well protected either with cover or by bringing the pots indoors.

Young seedlings that are exposed to frost will surely die.

Step 3

If transplanting from pots, do so once the seedlings have reached 10cm (4 inches) in height. Allow for 60-100cm (24-40 inches of spacing between seedlings.

The final position should be in shade or semi-shade. Finish transplanting by watering in the seedlings.

Once established, plants can tolerate cold temperatures down to -20°C/-4°F.

The roots of Black Cohosh can be ready to harvest in between three and five years.

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