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Green / Slide Alder

Alnus crispa

  • Multi-stemmed plant to 3m tall and 2m wide
  • Dark shiny green leaves in the summer
  • Persistent catkins; male and female catkins on the same plant start blooming in late winter or very early spring; female catkins cone-like 1-2 cm long, persistent after seed has shed, hanging in groups of 3-6
  • Smooth grey bark similar to River Alder

Landscape Use:

  • You can use this where you want a screen that has a nice deep, dark, dense green look
  • Green alders have a pretty form in winter and the silvery grey bark creates winter interest
  • Small birds like finches and chickadees eat the seed throughout the winter
  • Flexible in exposure, will grow in full sun or shade
  • Extremely drought tolerant for Calgary and area gardens
  • A nitrogen fixer

Special Conditions:

  • Requires some supplemental watering
  • Place near downspout or in lower wet areas


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