ALNUS glutinosa

Commonly known as Black alder, Common alder

Yellow catkins in March, suitable as a windbreak especially in waterlogged areas
Further Reading....
  • Deciduous
    Dark-green leaves to 10cm (4in) long, sticky when young.
  • Yellow
  • Height
    25m (80ft)
  • Spread
    10m (30ft)
  • Tree
    Yellow-brown male catkins 10cm (4in) long in groups of 3-5. Fruit, 2.5cm (1in) long in summer.
  • Hardy - very cold winter
    Hardy in all of UK and northern Europe. Plant can possibly withstand temperatures down to -20°C (-4°F)
  • Full sun

ALNUS glutinosa

Gift Wrapping available on this plant - UK Delivery Only
individually £9.00 each , 10+ £9.00 each 
  • Additional Features
    Good to know
    The native alder. Wildlife plant - birds. Lasts indefinitely underwater. Makes good charcoal. Produced superior gunpowder. Was coppiced widely in north-east UK for clogs.
    Pests & Diseases
    Phytophthora root rot.
    Place of origin
    Europe, northern Africa, western Asia.
    Resistant to honey fungus
    These plants have little or few problems with honey fungus.
  • Garden Location/Conditions
    Coastal / windswept
    Tolerant of full exposure to sea winds
  • Hardiness
    Fully hardy
  • Leaf margin
    (see photos above)
  • Leaf shape
    (see photos above)
  • Pruning group
    Pruning group 1
    Suitable for: Deciduous and evergreen trees, and some deciduous shrubs.
    Pruning: Minimal pruning required. Prune wayward or crossing branches to maintain a healthy framework.
    When: When dormant in the late winter/early spring. Some in the summer/autumn to prevent bleeding of sap.

    RHS group 1
  • Seasonal Interest
  • Soil Conditions
    Fertile well drained soil
  • Tree Shape
    Broadly conical
  • Wildlife
    Rabbit Resistant
25m (80ft)
tree - guide for size not form Average Person
  10m (30ft)

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