Western Mountain Ash vs Black Locust - TreeTime.ca

Western Mountain Ash vs Black Locust

Sorbus scopulina

Robinia pseudoacacia

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Western Mountain Ash
Black Locust

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.

Black Locust is an attractive tree. Its distinctive leaves are made of about a dozen bright green leaflets. It also notable for its fragrant white flowers, which smell of citrus.

Black Locust can grow in many situations, but prefers dry areas with lots of sun. It is robust and is an excellent choice for establishing shade in dry, open areas.

Important note: Much of the Black Locust is toxic to humans and livestock, including seeds, bark, and leaves.

Western Mountain Ash Quick Facts

Black Locust Quick Facts

Lowest Price: $0.89 - SAVE UP TO 82%
Zone: 2a
Zone: 3a
Height: 9 m (30 ft)
Height: 12 m (40 ft)
Spread: 6 m (20 ft)
Spread: 8 m (25 ft)
Moisture: dry, normal
Moisture: dry, normal
Light: full sun
Light: full sun
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no
Berries: bunches of orange-red berries appear in late summer
Flowers: white
Flowers: Creamy white flowers in a pyramidal shape bloom in may-june
Bark: dark reddish brown to balck with furrows
Growth rate: medium
Growth rate: fast
Life span: medium
Life span: long
Suckering: none
Suckering: high




Other Names: cascade mountain ash, greene mountain ash
Other Names: false acacia, yellow locust