Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Sitka Alder (Alnus viridis ssp. sinuata) is a native tree or shrub that grows in Northern California, primarily in the North Coast, the Klamath Mountain Range and North Coast Range regions. It is slow growing and long-lived. It grows in an upright form to a height of 16 feet, with active growth during the spring and summer. Leaves are light-green and deciduous. It tends to grow in creek and meadow edges, at elevations from 3300-8900 feet.

Plant type

Tree

Size

10 - 16 ft Tall

Form

Upright

Growth rate

Slow

Dormancy

Winter Deciduous

Flowering season

Summer

Sun

Partial Shade

Soil description

Prefers sandy or loamy soils. Does not grow well in clay soils.

Sunset Zones

1*, 2*, 3*, 7*, 14, 15

Site type

Creek and meadow edges

Plant communities

Douglas-Fir Forest, Red Fir Forest, Forest, Yellow Pine Forest, Wetland-Riparian

Bats
Caterpillars
Butterflies

Butterflies and moths supported

0 confirmed and 48 likely

Confirmed Likely

Acerra normalis

Fingered Dagger Moth

Acronicta dactylina

Andropolia aedon