Sea Buckthorn (Seaberry) vs Mountain Alder - TreeTime.ca

Sea Buckthorn (Seaberry) vs Mountain Alder

Hippophae rhamnoides l.

Alnus incana subsp. tenuifolia

CUSTOM GROW

Sea Buckthorn (Seaberry)
Mountain Alder

Sea Buckthorn, aka Seaberry, is a nitrogen fixing shrub that produces attractive berries high in vitamin C.

While we can't confirm claims that the berries are effective in treating various ailments, many people believe consuming the berries helps with arthritis, infections, and asthma, among other things.

Sea Buckthorn plants have attractive pale silvery-green leaves, dense branches, and large thorns, people like to grow in ornamental hedges or as a first row in a shelterbelt.

Note: these plants typically reach maturity and make their sex easily known (females producing fruit) in their 3rd or 4th year of growth. Our seedlings are too young to identify their sex.

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.

Sea Buckthorn (Seaberry) Quick Facts

Mountain Alder Quick Facts

Lowest Price: $1.99 - SAVE UP TO 72%
Zone: 2b
Zone: 1a
Height: 5 m (15 ft)
Height: 6 m (20 ft)
Spread: 4 m (12 ft)
Spread: 3 m (10 ft)
Light: full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: normal, wet
Growth rate: medium
Growth rate: medium
Life span: medium
Life span: medium
Growth form: multi-stemmed, thicket-forming
Spreading: rhizomes - medium, seeds - low, layering - low
Suckering: high


Foliage: slender silvery-green leaves
Bark: smooth, gray to brown
Berries: small, edible
Hybrid: no
Hybrid: no
Catkins: no
Catkins: yes

In row spacing: 0.9 - 1.2 m (3 - 4 ft)

Between row spacing: 5 m (16 ft)
Native to: AB, BC, SK, YT, NT
Other Names: sallowthorn, sandthorn, seaberry
Other Names: river alder, speckled alder, thin-leaved alder, thinleaf alder, western river alder