Scientific Name
Alnus glutinosa

Common Name
Common alder; European alder; Black alder

Hardiness Zones: 3-7
Habit: Deciduous
Growth Rate: Rapid
Site Requirements: Sun to partial shade; range of soil types including wet, dry and infertile soil
Texture: Medium
Form: Pyramidal in youth; rounded crown with age; often multistemmed
Height: 40 to 60’
Width: 20 to 40’
Leaf: 2 to 4.5" alternate rounded, shiney green leaves; nonshowy fall color
Flower/Fruit: 2 to 4" yellow brown to red brown catkins (male flowers); female flowers on short purplish brown strobili which persist until winter
Comments: Has naturalized along streams; tough adoptable plant; few pest problems; tolerates short term flooding; flower and fruiting best in full sun; easy to transplant; dislikes summer heat
Cultivars: Imperalis
 


[Imperialis]

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