Arnold Hawthorn vs Sitka Alder - TreeTime.ca

Arnold Hawthorn vs Sitka Alder

Crataegus arnoldiana

Alnus alnobetula subsp. sinuata

NOT AVAILABLE THIS SEASON - MIGHT RETURN

CUSTOM GROW

Arnold Hawthorn
Sitka Alder

Arnold Hawthorn is a low-branched tree favored by wildlife and landscapers. This tree's beautiful white flowers and bright red berries make it an attractive ornamental in anyone's yard. Arnold Hawthorn is also used in windbreaks and riparian planting.

Despite its thorns, Arnold Hawthorn is a popular choice of food and shelter for deer and birds. Humans can also eat these berries fresh or preserved, but Arnold Hawthorn will not have high yields until it matures at 5-8 years.

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.

Arnold Hawthorn Quick Facts

Sitka Alder Quick Facts

Zone: 3a
Zone: 2a
Height: 5 m (15 ft)
Height: 5 m (15 ft)
Spread: 5 m (15 ft)
Spread: 3 m (10 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: normal
Moisture: wet
Growth rate: medium
Growth rate: medium
Life span: medium
Life span: medium
Growth form: upright to prostrate, thicket-forming
Spreading: seed - medium, layering - medium
Suckering: none


Foliage: contains thorns
Fall colour: yellow
Bark: gray to brown
Bark: redish-brown to grey, smooth
Flowers: white
Berries: red pomes about 1 cm in diameter
Hybrid: no
Hybrid: no
Catkins: no
Catkins: yes


Native to: AB, BC, YT, NT
Other Names: wavy leaf alder