Green Alder vs Dwarf Arctic Willow - TreeTime.ca

Green Alder vs Dwarf Arctic Willow

Salix purpurea Nana

Alnus alnobetula subsp. crispa

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Dwarf Arctic Willow
Green Alder

Dwarf Arctic Willow is a beautiful ornamental shrub that attracts butterflies. It grows into a low dense, rounded shrub with slender purple stems. The Dwarf Arctic Willow has bluish-green foliage throughout the season and stunning when planted as an artistic hedge. Cold hardy and juglone tolerant, this shrub will make a nice addition to your urban garden.

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.

Dwarf Arctic Willow Quick Facts

Green Alder Quick Facts

Zone: 4a
Zone: 1a
Height: 1.2 m (4 ft)
Height: 7 m (23 ft)
Spread: 1.2 m (4 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: high
Suckering: high


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: dwarf blue leaf arctic willow, dwarf purple osier, purple willow, salix purpurea gracilis
Other Names: american green alder