• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Pulsatilla vernalis

shaggy windflower

shaggy windflower

© RHS 2003

  • Other common names shaggy windflower
    lady of the snows

  • Synonyms Anemone vernalis

  • Family Ranunculaceae

  • Genus Pulsatilla are herbaceous perennials forming clumps of finely dissected leaves, with solitary, hairy bell-shaped or cup-shaped flowers followed by silky-plumed seed-heads

  • Details P. vernalis is a semi-evergreen perennial forming a clump to 10cm in height, with finely divided leaves and bell-shaped white flowers 6cm in width, nodding in bud, later upward-facing, followed by silky seed-heads

  • Plant range Europe, N Asia


  • Foliage Deciduous

  • Habit Clump-forming

  • Toxicity Can cause mild stomach upset if ingested

  • Hardiness

    Hardiness ratings

    All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

    • H1a - Under glass all year (>15C)
    • H1b - Can be grown outside in the summer (10 - 15)
    • H1c - Can be grown outside in the summer (5 - 10)
    • H2 - Tolerant of low temperatures, but not surviving being frozen (1 to 5)
    • H3 - Hardy in coastal and relatively mild parts of the UK (-5 to 1)
    • H4 - Hardy through most of the UK (-10 to -5)
    • H5 - Hardy in most places throughout the UK even in severe winters (-15 to -10)
    • H6 - Hardy in all of UK and northern Europe (-20 to -15)
    • H7 - Hardy in the severest European continental climates (< -20)




  • Full Sun

  • Aspect South-facing or East-facing

  • Exposure Exposed


  • Chalk


  • Chalk


  • Chalk


  • MoistureMoist but well-drained

  • SoilChalk, Loam, Sand

  • pHAcid, Neutral


  • Ultimate height Up to 10 cm

  • Ultimate spread 0-0.1 metre

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow in very gritty, moist but sharply drained soil in full sun. Protect from excessive winter wet. It resents root disturbance and may be difficult to establish, so plant when small and leave undisturbed. Can also be grown in pots in an alpine house

Propagation Propagate by seed sown in pots in an open frame as soon as seed is ripe. Propagate by taking root cuttings in winter

Suggested planting locations and garden types Rock Garden Gravel Garden Patio & Container Plants

How to care

Pruning Leave faded flowers as seedheads are an attractive feature

Pests Generally pest free

Diseases Generally disease free

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