Meadowsweet vs Mountain Alder - TreeTime.ca

Meadowsweet vs Mountain Alder

Filipendula ulmaria

Alnus incana subsp. tenuifolia

CUSTOM GROW

CUSTOM GROW

Meadowsweet
Mountain Alder

Meadowsweet gets its name from its sweet fragrance from the creamy white flowers. It is a large upright herbaceous perennial shrub. They bloom in early summer, and with the right conditions may remain throughout the season.

Take care of where you’re planting Meadowsweet as it is known to spread.

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.

Meadowsweet Quick Facts

Mountain Alder Quick Facts

Zone: 3a
Zone: 1a
Height: 1.2 m (4 ft)
Height: 6 m (20 ft)
Spread: 0.3 m (1.0 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: short
Life span: medium
Growth form: multi-stemmed, thicket-forming
Spreading: rhizomes - medium, seeds - low, layering - low
Suckering: low


Bark: smooth, gray to brown
Flowers: white
Hybrid: no
Hybrid: no
Catkins: no
Catkins: yes


Native to: AB, BC, SK, YT, NT
Other Names: bride wort, mead wort
Other Names: river alder, speckled alder, thin-leaved alder, thinleaf alder, western river alder