American Mountain Ash vs Western Mountain Ash - TreeTime.ca

American Mountain Ash vs Western Mountain Ash

Sorbus americana

Sorbus scopulina

COMING SOON

(new stock expected: fall of 2025)

NOT AVAILABLE THIS SEASON - MIGHT RETURN

American Mountain Ash
Western Mountain Ash

American Mountain ash is a beautiful, medium-sized ornamental tree that is ideal for residential lots. Mountain Ash blooms with tiny white flowers in the spring, followed by clusters of small red/orange berries in the summer.

American Mountain Ash's berries stay on the tree throughout the winter. This attracts birds and other small wildlife to your landscape as the berries are an important food source during the winter months.

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.

American Mountain Ash Quick Facts

Western Mountain Ash Quick Facts

Zone: 2a
Zone: 2a
Height: 10 m (32 ft)
Height: 9 m (30 ft)
Spread: 6 m (20 ft)
Spread: 6 m (20 ft)
Light: full sun
Light: full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: medium
Growth rate: medium
Life span: medium
Life span: medium
Suckering: none
Suckering: none


Fall colour: scarlet red
Flowers: white clusters, spring
Flowers: white
Berries: bunches of orange-red
Berries: bunches of orange-red berries appear in late summer
Seeds: seeds contained within the berries
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: ON, QC, NS, NB, NL, PE
Native to: AB, BC, SK, MB, YT, NT
Other Names: dogberry
Other Names: cascade mountain ash, greene mountain ash