Gray Dogwood vs Mountain Alder - TreeTime.ca

Gray Dogwood vs Mountain Alder

Alnus incana subsp. tenuifolia

Cornus racemosa

CUSTOM GROW

CUSTOM GROW

Mountain Alder
Gray Dogwood

Mountain Alder is a native cold-hardy shrub or small tree often found along streams and in moist forested habitats. Its nitrogen-fixing ability enriches soils and supports surrounding vegetation, while its extensive root system helps stabilize streambanks and slopes. The fast growth rate allows it to establish quickly on disturbed sites, making it especially valuable in reclamation, restoration, and erosion control projects.

Often forming dense thickets, Mountain Alder enhances habitat quality in riparian and upland areas. It provides food and cover for various wildlife, including birds and small mammals. Recognized as an important species for soil and water conservation, it is well suited for riparian planting, naturalization, and ecological restoration.

Note: We use Sitka Alder for Alnus incana subsp. tenuifolia. This species is also known by many other common names, including Grey Alder, River Alder, and others. Please confirm the scientific name to ensure you are ordering the correct plant.

Gray dogwood is a thicket-forming, deciduous shrub with greenish-white blossoms in open, terminal clusters. Young twigs are red and the fruit pedicels remain conspicuously red into late fall and early winter.

Fruit itself is a white, 1/4 in. drupe that usually does not remain on the shrub for long.

Great for naturalizing wild areas, this shrub attracts birds and other wildlife.

Mountain Alder Quick Facts

Gray Dogwood Quick Facts

Zone: 1a
Zone: 4a
Height: 6 m (20 ft)
Height: 3 m (10 ft)
Spread: 3 m (10 ft)
Spread: 3 m (10 ft)
Light: partial shade, full sun
Light: any
Moisture: normal, wet
Moisture: any
Growth rate: medium
Growth rate: slow
Life span: medium
Life span: medium
Growth form: multi-stemmed, thicket-forming
Spreading: rhizomes - medium, seeds - low, layering - low
Suckering: medium


Fall colour: deep, reddish puple
Bark: smooth, gray to brown
Hybrid: no
Hybrid: no
Catkins: yes
Catkins: no


Native to: AB, BC, SK, YT, NT
Native to: MB, ON, QC
Other Names: river alder, speckled alder, thin-leaved alder, thinleaf alder, western river alder