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Common Alder

Botanical Name
Alnus glutinosa
Hardiness
Zones 4 to 7
Height
40 to 60 feet
Width
20 to 40 feet
Flowers
Male catkins, female purplish egg shaped strobile
Fruit
Winged nutlet borne on egg-shaped woody strobile, persistent
Light
Full sun to part shade
Soil
Moist to wet
Planting & Care
  • Transplants easily in spring
  • Good tree for reclamation sites
  • Fixes own nitrogen
Problems
Wooly alder aphid, tent caterpillar, can become invasive
Varieties
  • Laciniata - dissected leaves
  • Pyramidalis - upright, narrow spread, good disease resistance

Upcoming Appearances
 

February 22 , 2020
Michiana Master Gardeners'
Garden Expo

Elkhart, Indiana


Feb. 25, 2020
SC Johnson's Golden Rondelle Theater
Racine, WI


Feb. 27-March 1, 2020
Fort Wayne Home & Garden Show
Fort Wayne, IN

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