• 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

Iberis umbellata

common candytuft

common candytuft

© RHS

  • Other common names common candytuft
    florist's candytuft

    garden candytuft
    globe candytuft
    purple annual candytuft
    purple candy-tuft

    see more
  • Family Brassicaceae

  • Genus Iberis can be annuals, evergreen perennials or sub-shrubs, with narrow leaves and racemes of white, pink or purple flowers

  • Details I. umbellata is a small, bushy annual to 30cm, with slender leaves and sweet-scented white, pink, purple or crimson flowers in flattened clusters in late spring and summer

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)

    H4

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Chalk

    Chalk

  • Loam

    Loam

  • Sand

    Sand

  • MoistureMoist but well-drained

  • SoilChalk, Loam, Sand

  • pHNeutral, Alkaline

Size

  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 1-2 years

How to grow

Cultivation Grow in poor to moderately fertile, neutral to alkaline, moist but well-drained soil in full sun.

Propagation Propagate by seed sown in spring

Suggested planting locations and garden types Flower borders and beds Garden Edging City & Courtyard Gardens Cottage & Informal Garden

How to care

Pruning Cut back after flowering

Pests Prone to slugs, snails and caterpillars

Diseases May be affected by club root

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