• 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

Inula helenium

elecampane

  • Other common names elecampane
    allicampane

    elf dock
    else dock
    elf wort
    enula campana
    horse elder
    horse heal
    scabwort
    wild sunflower
    yellow starwort

    see more
  • Family Asteraceae

  • Genus Inula may be annuals, herbaceous perennials or sub-shrubs, moslty with large basal leaves and daisy-like yellow flower-heads, often with narrow ray-florets

  • Details I. helenium is a robust perennial to 2m tall, with toothed, narrowly elliptic leaves to 60cm long, white-hairy beneath, and yellow daisy-like flower heads to 9cm wide, with narrow rays and a darker centre

  • Plant range W & C Asia

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • 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)

    H6

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Exposed or Sheltered

Soil

  • Clay

    Clay

  • Loam

    Loam

  • MoistureMoist but well-drained

  • SoilClay, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 1.5-2.5 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation It prefers deep, rich, moisture-retentive soil in full sun or partial shade. May need support if planted in windy situation

Propagation Propagate by division in autumn or spring. Take basal softwood cuttings in spring. Propagate by seed in spring; germinate at 10°C (50°F)

Suggested planting locations and garden types Flower borders and beds Cottage & Informal Garden Wildflower meadow Wildlife Gardens

How to care

Pruning Trim back faded foliage in the autumn or early spring

Pests Usually trouble free

Diseases Usually trouble free

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