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Herbaceous Perennial

Astrantia 'Star of Flame'PBR
  • RHS Plants for pollinators

An upright, clump-forming herbaceous perennial with deeply divided mid-green leaves. Branched stems bearing compact heads of long-lasting small, dark red flowers, tinged with pale green, appear throughout the summer

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Poorly–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Red Green Green
Autumn
Winter
Position
  • Full sun
  • Partial shade
Aspect

East–facing or North–facing or South–facing or West–facing

Exposure
Sheltered
Hardiness
H7
Botanical details
Family
Apiaceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming
Genus

Astrantia are clump-forming herbaceous perennials with palmately lobed basal leaves and branched, erect, wiry stems bearing compact umbels of tiny flowers surrounded by a rosette of showy bracts

Name status

Accepted

How to grow

Cultivation

Best grown in moist, fertile, humus-rich soil in sun or partial shade but will tolerate drier conditions

Propagation

Propagate by seed sown in pots in a cold frame as soon as seed is ripe or propagate by division in spring

Suggested planting locations and garden types
  • Cottage and informal garden
  • Coastal
  • Cut flowers
  • Flower borders and beds
Pruning

Deadhead before seed is ripe to prevent self-seeding

Pests

May be susceptible to astrantia leaf miner

Diseases

May be susceptible to powdery mildews

Get involved

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