• AGM plants

    AGM plants have been through a rigourous 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 f. rosea

Pink silk tree

AGM plants

AGM plants have been through a rigourous 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
Pink silk tree

© � RHS

  • Other common names Pink silk tree

  • 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

  • Family Mimosaceae / Mimosaceae

  • Species A. julibrissin f. rosea is a broad-crowned, medium-sized deciduous tree with large, mimosa-like bipinnate leaves. Fluffy rose-pink flower-heads, with prominent stamens, open in summer

  • Plant range Ethiopia, Iran to Japan, C, China

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)
    Old hardiness ratings

    While we update our systems with the new hardiness ratings you may still see old hardiness ratings in your search results. These are denoted as 'Old'.

    • H1 - Requires heated glass
    • H2 - Requires unheated glass
    • H3 - Hardy outside in some regions of the UK
    • H4 - Hardy throughout the UK
    • H1 + H3 - Requires heated glass but may be grown outside in summer

    For full details of the hardiness ratings see

    see more

    H2

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Chalk

    Sand

  • Chalk

    Chalk

  • Chalk

    Loam

  • MoistureWell-drained

  • SoilSand, Chalk, Loam

  • 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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