• 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

Laburnum × watereri 'Vossii'

Voss's laburnum

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
  • Other common names Voss's laburnum

  • Synonyms Laburnum 'Famous Walk'

  • Family Fabaceae

  • Genus Laburnum are small deciduous trees with leaves composed of three leaflets, and bright yellow pea-shaped flowers in pendent racemes

  • Details 'Vossii' is a broad-crowned small deciduous tree with deep green, ternate leaves. Bright yellow flowers in drooping racemes to 60cm in length

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Toxicity Highly toxic if ingested

  • 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 South-facing or East-facing

  • Exposure Sheltered or Exposed

Soil

  • Sand

    Sand

  • Clay

    Clay

  • Loam

    Loam

  • Chalk

    Chalk

  • MoistureWell-drained

  • SoilSand, Clay, Loam, Chalk

  • pHAlkaline, Acid, Neutral

Size

  • Ultimate height 4-8 metres

  • Ultimate spread 4-8 metres

  • Time to ultimate height 20-50 years

How to grow

Cultivation Good as specimen tree for a sunny position with a well-drained soil

Propagation Propagate by grafting

Suggested planting locations and garden types Low Maintenance Coastal

How to care

Pruning Pruning group 1

Pests Can get aphids, leaf-mining moths and leaf-mining flies. Young trees can be damaged by snails

Diseases Powdery mildews and silver leaf may be a problem

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