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Alnus glutinosa

Black Alder
Betulaceae
Deciduous, Trees

ALNUS

Moisture-loving trees that thrive in moist or wet soils, even tolerate periodic flooding. Good near creeks and other waterways. Very fast growing. In all species, clusters of tassel-like, greenish yellow male flower catkins give interesting display before leafout. Female flowers develop into small woody cones that decorate bare branches in winter; these delight flower arrangers. Seeds attract birds. Alders need little pruning except to remove suckers, crossing branches, and dead wood.

Alnus glutinosa

Native to Europe, North Africa. Probably best as multistemmed tree; grows moderately quickly to 70 ft. tall, 30 ft. wide. Roundish, 2–4-in., coarsely toothed leaves in lustrous. Makes dense mass from ground up. Good for screening.

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