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Laburnum Genus

Laburnum

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General Needs

  • LightFull sun
  • HardinessFully hardy (min -15°C)
  • SoilClay, Well drained, Chalky
  • Soil pH6.0 to 9.0
  • WaterSemi-moist or Dry

Description

Laburnum genus. This genus includes 3 species of deciduous shrubs and small trees. They produce compound leaves with 3 leaflets. The flowers are in pendant clusters of bright yellow and pea-shaped blooms; they are borne in profuse pendulous sprays. After the flowers brown seed pods are produced. Both leaves and seeds are very poisonous.

Characteristics

Deciduous, Fragrants

Origin

Europe & Asia

Interest and use

Grown for their profuse, pendant flower clusters in spring and summer.

Cultivation

They prefer full sun with some humidity and they tolerate any moderately fertile soil. They are propagated from seed in the autumn, the cultivars by budding in summer. The competing leaders can be pruned in the early years to establish a tree -like form. It is possible to create ‘laburnum arches’ of 2 rows of trees tied down over a trellis, so that the flower sprays hang below rather like those of wisterias. Watch out rather poisonous.

Propagation

Seed in autumn, hybrids by budding in summer.

Pests, diseases or disorders

Seeds are very poisonous. Black fly, leaf miners and honey fungus can cause problems.

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