25. Alnus rugosa

Common name(s): Speckled Alder, Black Alder, Hazel Alder, Smooth Alder

Plant type: deciduous small tree
Primary method of propagation: seed

Propagation by Seed

Time of year to collect seed: autumn
Time of year to sow seed: spring
Seed treatment : stratify 40F 4-5mo.
Preferred temperature for germination : 70-80 degrees F