Common Caragana vs Green Alder - TreeTime.ca

Common Caragana vs Green Alder

Alnus alnobetula subsp. crispa

Caragana arborescens

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Green Alder
Common Caragana

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.

Common Caragana is a fast growing shrub that's known for its exceptional hardiness and drought tolerance. Although it's most commonly planted in shelterbelts, Common Caragana is also an excellent hedge or feature shrub.

Note: in warmer areas, this species can be difficult to contain once planted. Use the right plant in the right place.

Green Alder Quick Facts

Common Caragana Quick Facts

Lowest Price: $3.49 - SAVE UP TO 30%
Zone: 1a
Zone: 1b
Height: 7 m (23 ft)
Height: 4 m (13 ft)
Spread: 3 m (10 ft)
Spread: 1.5 m (5 ft)
Light: any
Light: partial shade, full sun
Moisture: any
Moisture: dry, normal
Growth rate: fast
Growth rate: medium
Life span: short
Life span: medium
Suckering: high
Suckering: none
Maintenance: medium


Flowers: yellow, in spring
Fruit: pod like fruits
Hybrid: no
Hybrid: no
Catkins: yes
Catkins: no

In row spacing: 0.9 m (3 ft)

In row spacing: 0.3 m (1.0 ft)
Between row spacing: 5 m (16 ft)
Between row spacing: 5 m (16 ft)
Native to: AB, SK, MB, ON, NS, NB, NL, YT
Other Names: american green alder
Other Names: black karagana, caragana, pea tree, siberian pea shrub, yellow acacia