• 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

Salix alba

white willow

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  • Other common names white willow
    Huntingdon willow

    swallow-tailed willow

    see more
  • Family Salicaceae

  • Genus Salix are deciduous shrubs and trees of diverse habit, with simple leaves and tiny flowers in catkins, male and female usually on separate plants. Some are valued for their brightly coloured winter shoots, others for their foliage or showy male catkins

  • Details S. alba is a tree, up to 25m high, with dark grey furrowed bark. Its long, narrow pointed leaves, up to 10cm long, are dull green above, blue-green beneath, and silky, so that they appear silvery-white at a distance; catkins, 4-6cm long, appear with the leaves in spring

Characteristics

  • Foliage Deciduous

  • Habit Spreading / Branched

  • 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)

    H6

Colour

Sunlight

  • Full Sun

  • Aspect North-facing or West-facing or East-facing or South-facing

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Chalk

  • Clay

    Clay

  • Loam

    Loam

  • Sand

    Sand

  • MoistureMoist but well-drained, Poorly-drained

  • SoilChalk, Clay, Loam, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height Higher than 12 metres

  • Ultimate spread wider than 8 metres

  • Time to ultimate height 20-50 years

How to grow

Cultivation Grow in full sun in moist or wet soil; avoid planting near buildings because its roots take up a lot of water from a wide area

Propagation Propagate by softwood cuttings in early summer or hardwood cuttings in winter; may also be propagated by large sets, up to 3.5m long and 2-3cm thick

Suggested planting locations and garden types Wildlife Gardens Cottage & Informal Garden

How to care

Pruning Pruning group 1

Pests May be affected by aphids, caterpillars, gall mites, flea beetles, sawfly larvae, and willow scale

Diseases May be affected by willow anthracnose, watermark disease, willow heart rot, rust diseases, crown gall, honey fungus, root rot, silver leaf, and tar spot

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