Laburnum × watereri

RHS Plant Profile
Voss's laburnum

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Voss's laburnum RHS
Voss's laburnum RHS

Synonyms

Laburnum watereri

Trees

A small deciduous tree with trifoliate leaves that are slightly hairy beneath. In late spring and early summer, dense, drooping racemes of pea-like yellow flowers appear followed by partially-developed hairy seed pods

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

4-8 metres

Max Spread

4-8 metres

Size

Time to Maturity
20–50 years
Max Spread
4-8 metres
Max Height
4-8 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing or North–facing or East–facing
Exposure
Exposed or Sheltered
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 & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Fabaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Potentially harmful
Harmful if eaten. Wear gloves and other protective equipment when handling Pest: Harmful if eaten (dogs, rabbits, rodents). For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus
Laburnum are small deciduous trees with leaves composed of three leaflets, and bright yellow pea-shaped flowers in pendent racemes
Name Status
Correct
Plant Range
Europe

How to Grow

Cultivation

Easy to grow in any well-drained soil in full sun

Propagation

Propagate by grafting

Suggested planting locations and garden types

  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Low Maintenance

Pruning

Pruning group 1

Pests

May be susceptible to aphids, leaf-mining moths, leaf-mining flies and snails

Diseases

May be susceptible to powdery mildews, silver leaf and honey fungus