Round Leaf Hawthorn vs Mountain Alder - TreeTime.ca

Round Leaf Hawthorn vs Mountain Alder

Alnus incana subsp. tenuifolia

Crataegus rotundifolia (Crataegus cyclophylla)

CUSTOM GROW

COMING SOON

(new stock expected: fall of 2026)

Mountain Alder
Round Leaf Hawthorn

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.

Getting its name from rounded, toothed leaves, the Round Leaf Hawthorn is a winter hardy shrub that grows small, red, berry-like fruits.

Commonly used for landscaping, this shrub can also be found along stream banks and in wooded areas. Caution is advised when handling the Round Leaf Hawthorn, as it can have sharp thorns approximately 1" long.

Mountain Alder Quick Facts

Round Leaf Hawthorn Quick Facts

Zone: 1a
Zone: 2a
Height: 6 m (20 ft)
Height: 3 m (10 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: medium
Growth rate: slow
Life span: medium
Life span: long
Growth form: multi-stemmed, thicket-forming
Spreading: rhizomes - medium, seeds - low, layering - low
Suckering: none


Foliage: round, serrated
Bark: smooth, gray to brown
Flowers: showy white
Fruit: small red berries
Hybrid: no
Hybrid: no
Catkins: yes
Catkins: no


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