Sandbar Willow vs Sitka Alder - TreeTime.ca

Sandbar Willow vs Sitka Alder

Salix exigua

Alnus alnobetula subsp. sinuata

CUSTOM GROW

CUSTOM GROW

Sandbar Willow
Sitka 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.

Sitka Alder is a native deciduous shrub or small tree that often forms dense thickets. Its extensive root system stabilizes slopes and streambanks. Nitrogen-fixing capabilities and nutrient-rich leaf litter improve soil fertility, creating better growing conditions for surrounding plants. These qualities make it especially effective in disturbed or erosion-prone sites.
Often found in moist, high-elevation mountain environments, Sitka Alder also enhances habitat by providing cover and structure in both riparian and upland areas. Birds and small mammals utilize it for nesting, and its seeds serve as a food source.
Note: We use Sitka Alder for Alnus alnobetula subsp. sinuata. This species is also known by many other common names, including Mountain Alder, Green Alder, and others. Please confirm the scientific name to ensure you are ordering the correct plant.

Sandbar Willow Quick Facts

Sitka Alder Quick Facts

Zone: 2a
Zone: 2a
Height: 4 m (13 ft)
Height: 5 m (15 ft)
Spread: 3 m (10 ft)
Spread: 3 m (10 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: any
Moisture: wet
Growth rate: fast
Growth rate: medium
Life span: short
Life span: medium
Growth form: upright to prostrate, thicket-forming
Spreading: seed - medium, layering - medium
Suckering: medium


Bark: redish-brown to grey, smooth
Seeds: located within the capsules on the catkins
Hybrid: no
Hybrid: no
Catkins: yes
Catkins: yes


Native to: AB, BC
Native to: AB, BC, YT, NT
Other Names: wavy leaf alder