Western Mountain Ash vs Blue Moon Wisteria - TreeTime.ca

Western Mountain Ash vs Blue Moon Wisteria

Wisteria macrostachya Blue Moon

Sorbus scopulina

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Blue Moon Wisteria
Western Mountain Ash

Blue Moon Wisteria is a striking, flowering vine, and the hardiest of the wisterias. Up to three times in one growing season you can expect showy, fragrant, lavender-blue flowers.

Make sure you plan your site as this vine requires a structure to support its mature weight. Try planting close to a post, trellis, or fence.

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.

Blue Moon Wisteria Quick Facts

Western Mountain Ash Quick Facts

Zone: 3a
Zone: 2a
Height: 5 m (18 ft)
Height: 9 m (30 ft)
Spread: 1.5 m (5 ft)
Spread: 6 m (20 ft)
Light: full sun
Light: full sun
Moisture: normal
Moisture: dry, normal
Growth rate: fast
Growth rate: medium
Life span: medium
Life span: medium
Suckering: medium
Suckering: none
Maintenance: medium

Toxicity: can be toxic to cats, dogs, and horses when consumed

Flowers: blue/purple strings of flowers
Flowers: white
Berries: bunches of orange-red berries appear in late summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, YT, NT
Other Names: cascade mountain ash, greene mountain ash