Pussy Willow vs Mountain Alder - TreeTime.ca

Pussy Willow vs Mountain Alder

Salix discolor

Alnus incana subsp. tenuifolia

CUSTOM GROW

Pussy Willow
Mountain Alder

Pussy Willow is a large shrub or small tree that produces catkins that are soft, silky, and silvery before leaves appear in the spring. This native willow prefers moist to wet soil.

Pussy Willow makes a beautiful accent tree, and its bright branches can be used for floral arrangements or basket making.

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.

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.

Pussy Willow Quick Facts

Mountain Alder Quick Facts

Lowest Price: $3.69 - SAVE UP TO 38%
Zone: 2a
Zone: 1a
Height: 7 m (23 ft)
Height: 6 m (20 ft)
Spread: 3 m (10 ft)
Spread: 3 m (10 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: normal, wet
Moisture: normal, wet
Growth rate: fast
Growth rate: medium
Life span: long
Life span: medium
Growth form: multi-stemmed, thicket-forming
Spreading: rhizomes - medium, seeds - low, layering - low
Suckering: high


Bark: smooth, gray to brown
Seeds: located within the catkins
Hybrid: no
Hybrid: no
Catkins: yes
Catkins: yes


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, NT, PE
Native to: AB, BC, SK, YT, NT
Other Names: american willow
Other Names: river alder, speckled alder, thin-leaved alder, thinleaf alder, western river alder