Western Mountain Ash vs Ironwood Tree - TreeTime.ca

Western Mountain Ash vs Ironwood Tree

Ostrya virginiana

Sorbus scopulina

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Ironwood Tree
Western Mountain Ash

Ironwood Tree is one of the strongest and most resilient trees you will find in North America. In fact, it has the hardest and most dense wood of any North American tree. Prized for its oval shaped canopy and showy winter trunk, this striking shade tree will make a beautiful addition to any yard. Make sure you do not plant near roads as it is highly salt sensitive.

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.

Ironwood Tree Quick Facts

Western Mountain Ash Quick Facts

Zone: 3a
Zone: 2a
Height: 8 m (25 ft)
Height: 9 m (30 ft)
Spread: 6 m (20 ft)
Spread: 6 m (20 ft)
Light: any
Light: full sun
Moisture: any
Moisture: dry, normal
Growth rate: slow
Growth rate: medium
Life span: long
Life span: medium
Suckering: none
Suckering: none


Flowers: white
Berries: bunches of orange-red berries appear in late summer
Hybrid: no
Hybrid: no
Catkins: yes
Catkins: no


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