• 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 udensis 'Sekka' (m)

willow 'Sekka'

  • Other common names willow 'Sekka'

  • Synonyms Salix sachalinensis 'Sekka'
    Salix 'Setsuka'

  • 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

    'Sekka' is a vigorous, spreading shrub ultimately forming a very large, dense thicket up to 5m high and 10m across. Many of the stems are curiously flattened and twisted, but still produce small, lance-shaped, bright green leaves and showy, silvery catkins with golden-yellow anthers in early 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 South-facing or West-facing or East-facing

  • Exposure Exposed or Sheltered

Soil

  • Loam

    Loam

  • Clay

    Clay

  • Sand

    Sand

  • MoistureMoist but well-drained

  • SoilLoam, Clay, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 4-8 metres

  • Ultimate spread wider than 8 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Grow in any deep, moist, well-drained soil in full sun. Dislikes shallow chalk soils

Propagation Propagate by softwood or hardwood cuttings

Suggested planting locations and garden types Cut Flowers Low Maintenance Architectural Cottage & Informal Garden

How to care

Pruning Pruning group 1

Pests Can get aphids, caterpillars, leaf beetles and sawflies

Diseases May be subject to willow anthracnose diseases and a rust

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