Red Alder

Alnusrubra

Family
Betulaceae (beh-tyoo-LAY-see-ee)
Genus
Alnus (AL-nus)
Species
rubra (ROO-bruh)
Synonym
Alnus oregona
Alnus oregona var. pinnatisecta
Sun Exposure
Full Sun
Foliage
Grown for foliage
Deciduous
Provides Winter Interest
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)
Bloom Color
Bloom Time
Other Details
Category
Trees
Water Requirements
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
Patent Information
Propagation Methods
Seed Collecting
Regional

This plant is said to grow outdoors in the following regions:

Issaquah, Washington

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Gardener's Notes:

0
positive
1
neutral
0
negative
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Oklahoma City, OK (Zone 7a) | November 2004 | neutral

This native alder grows well in poor soil. It tolerates full sun to full shade. It is also tolerant of salty conditions.

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(Verrucosa arenata)
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(Aphelocoma californica)
Featured
Arrowhead Spider
(Verrucosa arenata)
California Scrub Jay (formerly Western Scrub Jay )
(Aphelocoma californica)