Red Alder
Alnusrubra

Family: Betulaceae (beh-tyoo-LAY-see-ee)
Genus: Alnus (AL-nus)
Species: rubra (ROO-bruh)

Synonym:Alnus oregona

Synonym:Alnus oregona var. pinnatisecta

Category
Trees

Water Requirements

Sun Exposure
Full Sun

Foliage
Grown for foliage
Deciduous
Provides Winter Interest

Foliage Color

Height
30-40 ft. (9-12 m)
over 40 ft. (12 m)

Spacing
20-30 ft. (6-9 m)
30-40 ft. (9-12 m)

Hardiness
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)

Where to Grow

Danger

Bloom Color

Bloom Characteristics

Bloom Size

Bloom Time

Other details

Soil pH requirements

Patent Information

Propagation Methods

Seed Collecting