Astrantia carniolica
masterwort
An upright, clump-forming herbaceous perennial to around 45cm in height, with deeply divided mid-green leaves. Branched stems bear compact heads of soft, fluted, white flowers surrounded by green-tipped white bracts on thin stems in late June, with a second flush of flowers in late summer if cut back after flowering
Size
Ultimate height
0.1–0.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drained, Poorly–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Green White | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical details
- Family
- Apiaceae
- Native to GB / Ireland
- 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
Correct
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 division in spring
Suggested planting locations and garden types
- Coastal
- Cottage and informal garden
- Cut flowers
- Flower borders and beds
Pruning
Deadhead to prolong flowering. Cut back after flowering to encourage a second flush in late summer
Pests
May be susceptible to astrantia leaf miner
Diseases
May be susceptible to powdery mildews
Get involved
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