Lady Bird Johnson Wildflower Center - The University of Texas at Austin information

 Native Plant Database

Alnus incana ssp. tenuifolia

Thinleaf alder

Betulaceae (Birch Family)

Alnus incana ssp. tenuifolia (Thinleaf alder)
Shrub with spreading, slender branches or sometimes a small tree with several trunks and a rounded crown; often forming thickets.

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Plant Characteristics

Duration: Perennial
Habit: Tree
Leaf Retention: Deciduous
Leaf Arrangement: Alternate
Leaf Complexity: Simple
Leaf Venation: Pinnate
Breeding System: Flowers Unisexual , Monoecious
Leaf: Dark Green
Size Class: 12-36 ft.

Bloom Information

Bloom Color: Purple
Bloom Time: Mar , Apr


USA: AK , AZ , CA , CO , ID , MT , NV , NM , OR , UT , WA , WY
Canada: AB , BC , SK , YT
Native Habitat: Woodland

Growing Conditions

Water Use: High
Light Requirement: Sun
Soil Moisture: Moist
CaCO3 Tolerance: None

Last Update: 2007-01-01