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Herbaceous Perennial

Scabiosa atropurpurea 'Black Knight'
  • RHS Plants for pollinators

A short-lived, clump forming herbaceous perennial with feathery divided mid-green leaves. Throughout summer and early autumn it produces pincushion-shaped flowers that rise on thin stems above the foliage. These are darkest burgundy, with almost black centres and white stamens.

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Red Black Green
Autumn Red Black Green
Winter
Position
  • Full sun
Aspect

South–facing

Exposure
Sheltered
Hardiness
H4
Botanical details
Family
Caprifoliaceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming
Genus

Scabiosa can be annuals, biennials or herbaceous or evergreen perennials, with simple or pinnately lobed leaves and characteristic flower-heads with enlarged outer florets

Name status

Accepted

How to grow

Cultivation

Grow in moderately fertile, well-drained, neutral to slightly alkaline soil in full sun

Propagation

Propagate by division, or propagate by seed with gentle heat in spring.

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Prairie planting
  • Patio and container plants
  • Wildlife gardens
  • Cut flowers
  • Flower borders and beds
Pruning

Cut back stems after flowering

Pests

Generally pest-free

Diseases

May be susceptible to powdery mildews

Get involved

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