• 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

Succisa pratensis

devil's bit scabious

  • Other common names devil's bit scabious
    blue ball

    blue bonnets
    blue buttons
    blue caps
    blue kiss
    blue scabious
    curl daddy

    see more
  • Synonyms Scabiosa succisa

  • Family Caprifoliaceae

  • Genus Succisa are rhizomatous herbaceous perennials with simple, obovate leaves and long-stalked, solitary pale violet, pincushion-like flowerheads in late summer and autumn

  • Details S. pratensis is a perennial to 60cm, with a basal rosette of obovate leaves, with branched stems bearing solitary light purple, pincushion-like flowerheads 2cm across, in summer and autumn

  • Plant range Europe Africa Asia


  • Foliage Deciduous

  • Habit Clump-forming

  • 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

  • Partial Shade

  • Aspect South-facing or North-facing or West-facing or East-facing

  • Exposure Exposed or Sheltered


  • Clay


  • Chalk


  • Loam


  • MoisturePoorly-drained, Moist but well-drained

  • SoilClay, Chalk, Loam

  • pHAlkaline, Acid, Neutral


  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grows in any moist soil in sun or partial shade. Excellent for peaty bog garden. Long flowering season

Propagation Propagate by seed or basal cuttings

Suggested planting locations and garden types Low Maintenance Wildlife Gardens Cottage & Informal Garden Wildflower meadow

How to care

Pruning No pruning required

Pests Can be damaged by slugs

Diseases Generally disease free

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