Astrantia carniolica

RHS Plant Profile
masterwort
Plants for pollinators
Herbaceous Perennial

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

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Size

Time to Maturity
2–5 years

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained or Poorly–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical 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