Grey Alder vs Arnold Hawthorn - TreeTime.ca

Grey Alder vs Arnold Hawthorn

Crataegus arnoldiana

Alnus incana

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Arnold Hawthorn
Grey 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.

River Alder is a large shrub or small tree with a multi-stemmed, spreading habit. It is an excellent tree to plant if you want to stabilize the soil near rivers and creeks.

Unlike the other alder varieties, River Alder is attractive enough to be included in riverside plantings by municipal and provincial park organizations.

Note: We use Grey Alder for Alnus incana. This species is also known by many other common names, including River Alder, Speckled Alder, and others. Please confirm the scientific name to ensure you are ordering the correct plant.

Arnold Hawthorn Quick Facts

Grey Alder Quick Facts

Zone: 3a
Zone: 1a
Height: 5 m (15 ft)
Height: 8 m (25 ft)
Spread: 5 m (15 ft)
Spread: 4 m (12 ft)
Light: partial shade, full sun
Light: full sun
Moisture: normal
Moisture: normal, wet
Growth rate: medium
Growth rate: fast
Life span: medium
Life span: short
Suckering: none
Suckering: none


Foliage: contains thorns
Fall colour: yellow
Fall colour: yellow to orange
Bark: gray to brown
Flowers: white
Fruit: small catkins
Berries: red pomes about 1 cm in diameter
Cones: small brown cones
Hybrid: no
Hybrid: no
Catkins: no
Catkins: yes


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU, PE
Other Names: hoary alder, river alder, speckled alder