Sitka Alder vs Dwarf-Bog Birch - TreeTime.ca

Sitka Alder vs Dwarf-Bog Birch

Alnus alnobetula subsp. sinuata

Betula glandulosa

CUSTOM GROW

CUSTOM GROW

Sitka Alder
Dwarf-Bog Birch

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.

Dwarf-Bog Birch is a native, cold-hardy shrub that can be found across most of Canada. Its preference for moist soils and the extensive root system make it well-suited for riparian zone plantings, soil stabilization, and erosion control projects.
It features small, round, leathery leaves with scalloped edges and produces small, cone-like catkins. A distinguishing characteristic of the Dwarf-Bog Birch is the presence of large resin glands on the branches and the undersides of the leaves. These resin glands are the reason for its scientific name, Betula glandulosa.
Note: We use Dwarf-Bog Birch for Betula glandulosa. This species is also known by many other common names, including Bog Birch, Dwarf Birch, Glandular Birch, and others. Please confirm the scientific name to ensure you are ordering the correct plant.

Sitka Alder Quick Facts

Dwarf-Bog Birch Quick Facts

Zone: 2a
Zone: 2a
Height: 5 m (15 ft)
Height: 1.8 m (6 ft)
Spread: 3 m (10 ft)
Spread: 1.2 m (4 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: wet
Moisture: normal, wet
Growth rate: medium
Growth rate: medium
Life span: medium
Life span: medium
Growth form: upright to prostrate, thicket-forming
Growth form: spreading to prostrate, clump-forming
Spreading: seed - medium, layering - medium
Spreading: seeds - medium, layering - medium


Bark: redish-brown to grey, smooth
Bark: reddish brown
Hybrid: no
Hybrid: no
Catkins: yes
Catkins: yes


Native to: AB, BC, YT, NT
Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU
Other Names: wavy leaf alder
Other Names: dwarf birch, dwarf resin birch, glandular birch, resin birch, scrub birch, swamp birch