Green Alder vs Sweet Gale - TreeTime.ca

Green Alder vs Sweet Gale

Myrica gale

Alnus alnobetula subsp. crispa

NOT AVAILABLE THIS SEASON - MIGHT RETURN

COMING SOON

(new stock expected: fall of 2025)

Sweet Gale
Green Alder

Sweet Gale is a native, nitrogen-fixing shrub known for its aromatic foliage. Tiny glands on the leaves release a balmy, bay leaf-like scent with floral and citrus notes. In spring, the yellowish male catkins provide one of the earliest sources of pollen for bees and other insects. While later in the season, the female catkins produce seeds that are eaten by waterfowl. Sweet Gale is dioecious, meaning male and female flowers occur on separate plants.

Sweet Gale thrives in wet, acidic soils and is commonly found along wetlands and lakeshores. It can help stabilize shorelines, while its dense growth provides valuable cover for wildlife. It is well-suited for naturalization, wetland restoration, and erosion control projects.

Green Alder is a cold hardy, native shrub. It is often planted on infertile sites so it can fix nitrogen from the air and improve the soil quality.

Green Alder is known for its smooth grey bark and attractive shiny green leaves; it is commonly used in reclamation.

Sweet Gale Quick Facts

Green Alder Quick Facts

Zone: 1b
Zone: 1a
Height: 1.2 m (4 ft)
Height: 7 m (23 ft)
Spread: 0.9 m (3 ft)
Spread: 3 m (10 ft)
Light: partial shade, full sun
Light: any
Moisture: normal, wet
Moisture: any
Growth rate: medium
Growth rate: fast
Life span: medium
Life span: short
Growth form: upright, thicket-forming
Spreading: suckering - medium, seeds - low
Suckering: high


Foliage: dotted with yellow glands, sweet scented
Fall colour: yellow
Bark: reddish-purple, dotted with yellow glands
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, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU, PE
Native to: AB, SK, MB, ON, NS, NB, NL, YT
Other Names: bog myrtle, meadow-fern, sweet bayberry, sweetgale
Other Names: american green alder