Green Alder vs Black Hawthorn - TreeTime.ca

Green Alder vs Black Hawthorn

Crataegus douglasii

Alnus alnobetula ssp. crispa

NOT AVAILABLE THIS SEASON

NOT AVAILABLE THIS SEASON

Black Hawthorn
Green Alder

Black Hawthorn is a versatile plant that is native to wetlands and other areas with moist soils, but can also tolerate dry soils. This plant can be grown as a short shrub, or a tree reaching 30 feet tall.

Black Hawthorn is valued for erosion control and attracting pollinators. It also makes an attractive flowering ornamental that can be planted as a specimen or pruned as a hedge. It is commonly used in shelterbelts.

Green Alder is a cold hardy, native shrub. It is often planted on infertile sites so it can fix nitrogen from the air and improve the soil quality.

Green Alder is known for its smooth grey bark and attractive shiny green leaves; it is commonly used in reclamation.

Note:This species is currently unavailable. Grow your own using Green Alder seeds at SeedTime.ca.

Black Hawthorn Quick Facts

Green Alder Quick Facts

Zone: 3a
Zone: 1a
Height: 8 m (25 ft)
Height: 7 m (23 ft)
Spread: 5 m (15 ft)
Spread: 3 m (10 ft)
Moisture: any
Moisture: any
Light: partial shade, full sun
Light: any
Hybrid: no
Hybrid: no
Catkins: no
Catkins: yes
Fall colour: yellow to red
Berries: purplish-black pomes
Flowers: white
Bark: brown to gray
Growth rate: medium
Growth rate: fast
Life span: medium
Life span: short
Suckering: medium
Suckering: high


In row spacing: 0.9 m (3 ft)
Between row spacing: 5 m (16 ft)


Other Names: crataegus columbiana, douglas hawthorn, douglas' thornapple
Other Names: mountain alder, sitka alder