• 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

Albizia julibrissin

silk tree

  • Other common names silk tree
    bastard tamarind

    nemu tree

    see more
  • Synonyms Acacia julibrissin

  • Family Fabaceae

  • Genus Albizia can be deciduous trees, shrubs or climbers, with attractive bipinnate leaves with tiny leaflets, and flowerheads composed of many small flowers with prominent stamens

  • Details A. julibrissin is a medium-sized, deciduous tree with a broad, spreading crown. The large, mimosa-like leaves are composed of many small leaflets. Fluffy, greenish-yellow flowers with long stamens open on the top of the crown in summer, followed by clusters of long, narrow, pale brown pods that can hang on into winter

  • Plant range Iran to China, Taiwan

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 West-facing or South-facing

  • Exposure Sheltered

Soil

  • Chalk

    Chalk

  • Loam

    Loam

  • Sand

    Sand

  • MoistureWell-drained

  • SoilChalk, Loam, Sand

  • pHAcid, Alkaline, 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 in well-drained soil in full sun. Alternating mild and cold spells may damage top-growth. Saplings should flower in three years

Propagation Root semi-ripe cuttings with bottom heat in summer. Propagate by seed: collect seeds from pea-like pods and soften their coats in very hot water, leave to cool for 24 hours and sow. After germination transplant into root trainers to avoid disturbing tap roots

Suggested planting locations and garden types City & Courtyard Gardens Coastal Mediterranean Climate Plants

How to care

Pruning Pruning group 1 or pruning group 13 if wall-trained

Pests Generally trouble free

Diseases May be affected by wilt diseases such as verticillium wilt

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