• 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

Acacia dealbata

blue wattle

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
  • Other common names blue wattle
    mimosa

    silver wattle

    see more
  • Synonyms Racosperma dealbatum
    Acacia decurrens var. dealbata

  • Family Fabaceae

  • Genus Acacia can be deciduous or evergreen trees, shrubs or climbers, with alternate, pinnately divided leaves or simple modified leaf-like stalks (phyllodes), and tiny, sometimes fragrant, flowers in short spikes, or in racemes or spikes of spherical heads

  • Details A. dealbata is an evergreen shrub to 10m or more, with finely divided grey-green leaves and fragrant yellow flowerheads, borne in terminal clusters

  • Plant range Tasmania, Australia

Characteristics

  • Foliage Evergreen

  • 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)

    H3

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • Loam

    Loam

  • MoistureWell-drained

  • SoilSand, Loam

  • pHAcid, Neutral

Size

  • Ultimate height 8-12 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Grow outdoors in neutral to acid well-drained soil in sheltered location with full sun. Suits urban gardens or milder south west localities, may need winter protection elsewhere. Under glass grow in ericaceous or loam-based compost (JI No.2) in full light. Resents hard pruning

Propagation Propagate by seed or semi-hardwood cuttings

Suggested planting locations and garden types Flower borders and beds Wall-side Borders Patio & Container Plants City & Courtyard Gardens Cottage & Informal Garden

How to care

Pruning Pruning group 8 or pruning group 13 for wall-trained specimens

Pests Can get glasshouse red spider mite, fluted scale and mealybugs

Diseases Generally disease free

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