Sandbar Willow vs Green Alder - TreeTime.ca

Sandbar Willow vs Green Alder

Salix exigua

Alnus alnobetula subsp. crispa

CUSTOM GROW

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Sandbar Willow
Green Alder

Sandbar Willow is a deciduous species native to much of North America. This mid-sized, fast-growing shrub can be found in very wet areas, making it an ideal plan to use in a wet area with erosion risk.

Sandbar Willow has long, narrow green leaves, and its grassy narrow stems give it an attractive, bamboo-like appearance.

All willow are important to native pollinators each spring as they have higher amounts of pollen and nectar early each growing season when other food sources are scarce.

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.

Sandbar Willow Quick Facts

Green Alder Quick Facts

Zone: 2a
Zone: 1a
Height: 4 m (13 ft)
Height: 7 m (23 ft)
Spread: 3 m (10 ft)
Spread: 3 m (10 ft)
Light: partial shade, full sun
Light: any
Moisture: any
Moisture: any
Growth rate: fast
Growth rate: fast
Life span: short
Life span: short
Suckering: medium
Suckering: high


Seeds: located within the capsules on 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, BC
Native to: AB, SK, MB, ON, NS, NB, NL, YT
Other Names: american green alder