University of Florida

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: Summer
Seed treatment: stratify 40 degrees F 4-5 months.
Preferred temperature for germination: 70-80 degrees F