• 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 baileyana

Cootamundra 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
Cootamundra wattle

© RHS 1988

  • Other common names Cootamundra wattle
    golden mimosa

  • Family Mimosaceae

  • 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. baileyana is a large, graceful evergreen shrub to 6m in height, with fern-like, silvery-grey leaves and axillary racemes of small, globose yellow flowerheads in winter and spring

  • Plant range Australia (New South Wales)

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)

    H2

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or East-facing

  • Exposure Sheltered

Soil

  • Chalk

    Sand

  • Chalk

    Loam

  • MoistureMoist but well-drained

  • SoilSand, Loam

  • pHAcid, Neutral

Size

  • Ultimate height 4-8 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Grow under glass or indoors in a loam-based potting compost in full light. When in growth water freely and apply a balanced liquid fertiliser monthly. Water sparingly in winter, keeping barely moist. Can be grown outdoors in warmer climates

Propagation Propagate by seed at a minimum of 18°C in spring or root semi-hardwood cuttings in summer

Suggested planting locations and garden types Low Maintenance Wall-side Borders

How to care

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

Pests May be attacked by glasshouse red spider mite under glass

Diseases Generally disease free

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