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White Oak vs Western Mountain Ash

Quercus alba

Sorbus scopulina

White Oak
Western Mountain Ash

White Oak is large, long-lived tree with an irregular trunk divided into spreading, often horizontal, stout branches. A highly adaptable tree, White Oak features beautiful green leaves that turn red-purple in the fall and green acorns.

Western Mountain Ash is a popular ornamental tree native to the western part of North America. Its attractive, white clusters of flowers bloom in early summer, making way for red, yellow or orange fruit in the fall. If the fruit doesn't catch your eye, Western Mountain Ash's autumn colours will capture your–and the birds's–attention.

WHITE OAK QUICK FACTS

WESTERN MOUNTAIN ASH QUICK FACTS

Zone: 4a
Zone: 2a
Height: 30 m (98 ft)
Height: 9 m (30 ft)
Spread: 6 m (20 ft)
Moisture: dry, normal
Moisture: dry, normal
Light: partial shade, full sun
Light: full sun
Fall colour: dark red
Fall colour: red
Berries: bunches of orange-red berries appear in late summer
Flowers: white
Bark: light to dark gray to white, fissures and scaly
Nuts: nuts within acorns; attractive for wildlife
Growth rate: slow
Growth rate: medium
Life span: long
Life span: medium
Maintenance: medium
Suckering: none
Suckering: none
Pollution tolerance: high
Pollution tolerance: medium







Ships To Canada: yes
Ships to USA: yes
Ships To Canada: yes
Ships to USA: yes