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Hardy perennial
Ranunculaceae
Perennials
Bugbane ‘Black Negligee’
Black Cohosh
Bugbane ‘Black Negligee’: 120 cm tall and 60 cm wide, sun to partial shade. White, pink flowers in July-September. Zone 5; choose soil compatible with its moisture requirements.
- Exposure
- Sun to partial shade
- Life cycle
- Hardy perennial
- Hardiness
- Zone 5
Discover the plant
Common nameBugbane ‘Black Negligee’
FamilyRanunculaceae
GenusBlack cohosh
CultivarBlack Negligee
TypeHardy perennial
Botanical nameBlack Cohosh
With Cimicifuga 'Black Negligee', the flowerbed welcomes a plant whose flowers display shades of white and pink. Among its distinctive features are its incised leaves. The foliage presents nuances of purple and black, to be highlighted among different textures. The usual flowering period is July-September. The clump reaches approximately 120 cm in height and spreads to 60 cm; use these dimensions to position the plant at the back of a flowerbed and as a focal point.
Soil choice is essential for Bugbane 'Black Negligee': it should be kept moist and clayey. The preferred exposure is full sun to partial shade. For Bugbane 'Black Negligee', regularly check the soil around the root ball: it must remain fresh. Water at the base when the surface begins to dry and adjust watering according to rainfall; this exposure (full sun to partial shade) does not eliminate water requirements. A margin corresponding to its 60 cm spread avoids having to move the clump in the first few seasons. The indicated hardiness level is zone 5, to be assessed according to your garden's conditions.
When planting Bugbane 'Black Negligee', avoid scorching sun when the soil dries out quickly and clear dead stems in spring. Humus-rich soil that retains its freshness helps bugbanes support their large foliage and late flower stalks. For companion planting, consider campanulas, daylilies, and echinaceas in varieties with similar needs. Keep its 120 cm height in mind to place lower plants on the correct side and allow the flowers to be visible during July-September.
Planting guide
From planting to establishment.
Spacing / density
23.62 inches
Best planting time
Spring after the thaw or early autumn, allowing time for the roots to establish before the severe cold.
Growing method
Black Cohosh 'Black Negligee': Spring after the thaw or early autumn, allowing the roots time to establish before the cold weather sets in. For Black Cohosh 'Black Negligee', regularly check the soil around the root ball: it should remain consistently moist. Water at the base when the surface begins to dry and adjust watering according to rainfall; this exposure (sun to partial shade) does not eliminate the need for water. Humus-rich soil that retains moisture helps black cohosh support its large foliage and late-blooming flower stalks.
Soil and care
The right care,at the right time.
Care level
Easy
Watering
For Actaea 'Black Negligee', regularly check the soil around the root ball: it must remain moist. Water at the base when the surface begins to dry and adjust the amount of water according to rainfall; this exposure (sun to partial shade) does not eliminate the need for water.
Soil type
Kept moist, Clayey
Fertilization
Fertilizer for flowering
Moisture
Regular freshness during growth
Seasonal care
Black Negligee Actaea: avoid scorching sun where the soil dries quickly, and clear dead stems in spring. During its flowering period (July-September), also check for damaged stems and neighboring plants that might obscure the clump.
Container growing
A garden,within reach.
Recommended pot size
A stable, perforated container, significantly wider than the root ball; size to be adapted to the format sold and adult development.
To try Actaea 'Black Negligee' in a container, choose a stable pot with drainage holes, suitable for the root ball and its future size (60 cm). The substrate must remain fresh; it will dry out faster than in open ground. Plan to protect the container in winter depending on your climate.
Bloom and dimensions
Its place,in your garden.
Mature height
4 feet (1.22 m)
Width / spread
24 inches (61 cm)
Flower color
White
Foliage color
Green
Foliage type
Null and void
Growth rate
Slow
Growth habit
Erected
Fragrance
Not documented for this selection
Bloom period
July-September
Garden associations
In goodcompany.
Companion plants
Associations to consider for Actaea 'Black Negligee': campanulas, daylilies, echinaceas. Choose varieties that tolerate sun to partial shade and comparable moisture; allow each clump its adult space.
Plants to avoid
Around Actaea 'Black Negligee', especially avoid neighboring plants that would cover its leaves or strongly compete with its root ball. Light, water, and size compatibility take precedence over a list of so-called enemy plants.
Frequently asked questions
Your questions,answered.
Where to plant Actaea 'Black Negligee'?
Provide sun to partial shade and suitable soil (kept moist, Clay). Humus-rich soil that retains its coolness helps bugbanes support their large foliage and late flower stalks.
Where should 'Black Negligee' bugbane be planted?
Expect a mature height of approximately 120 cm and a width of 60 cm. Allow about 60 cm between centers, adjusting to the actual development of the clump. This size is suitable for use at the back of a flowerbed and as a focal point.
When does Cimicifuga 'Black Negligee' bloom?
The period indicated is July-September. The flower palette is white, pink. The exact date and duration depend on the climate, the season, and when the plant is installed.
How to water and care for Actaea 'Black Negligee'?
For Actaea 'Black Negligee', regularly check the soil around the root ball: it must remain moist. Water at the base when the surface begins to dry and adjust watering according to rainfall; this exposure (sun to partial shade) does not eliminate the need for water. Avoid scorching sun when the soil dries quickly and remove dead stems in spring.
Can Actaea 'Black Negligee' be grown in a pot?
To try Actaea 'Black Negligee' in a container, choose a stable pot with drainage holes, suited to the root ball and its future size (60 cm). The substrate must remain fresh; it will dry out more quickly than in the ground. Plan to protect the container in winter depending on your climate.
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