River Birch vs Green Alder - TreeTime.ca

River Birch vs Green Alder

Betula nigra

Alnus alnobetula subsp. crispa

NOT AVAILABLE THIS SEASON - MIGHT RETURN

River Birch
Green Alder

River Birch has beautiful, peeling, brown bark that reveals camel-colored and pink beneath. It is more borer resistant than white bark birches, which makes it a much longer-lived landscape tree.

Green Alder is a native, cold-hardy shrub found in boreal forests, along slopes, and in open upland habitats. It fixes nitrogen in the soil, improving fertility and helping other plants grow, while its roots help stabilize slopes and disturbed ground. Fast to establish on poor soils, it is widely used in reclamation, restoration, and erosion control projects.

With its smooth grey bark and shiny green leaves, Green Alder often forms dense thickets that provide cover for birds and small mammals. Its seeds, buds, and catkins also supply food for wildlife. Green Alder is well suited for naturalization and ecological restoration.

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

River Birch Quick Facts

Green Alder Quick Facts

Lowest Price: $3.49 - SAVE UP TO 42%
Zone: 3a
Zone: 1a
Height: 12 m (39 ft)
Height: 7 m (23 ft)
Spread: 5 m (16 ft)
Spread: 3 m (10 ft)
Light: full sun
Light: any
Moisture: normal, wet
Moisture: any
Growth rate: fast
Growth rate: fast
Life span: medium
Life span: short
Suckering: low
Suckering: high


Bark: dark gray-brown or pinkish-brown and scaly
Seeds: tiny winged seeds located within the catkins
Hybrid: no
Hybrid: no
Catkins: yes
Catkins: yes


In row spacing: 0.9 m (3 ft)
Between row spacing: 5 m (16 ft)
Native to: AB, SK, MB, ON, NS, NB, NL, YT
Other Names: black birch, water birch
Other Names: american green alder