Western Mountain Ash vs American Sycamore - TreeTime.ca

Western Mountain Ash vs American Sycamore

Sorbus scopulina

Platanus occidentalis

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Western Mountain Ash
American Sycamore

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 Sycamore is the largest tree native to eastern North America. Generally too large and messy to be a street tree, American Sycamore thrives in large, open spaces, such as an acreage or farm.

The bark is one of the main features that draw people to this tree. The outer bark flakes off in irregular pieces to reveal an attractive white, green, and cream colored inner layer, providing winter interest.

American Sycamore has an extremely fast growth rate, gaining up to 6 ft in one year, and will easily reach its mature height in a short period of time. Be wary of this trees' root system, as it's typically very extensive and needs lots of room to expand.

Western Mountain Ash Quick Facts

American Sycamore Quick Facts

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Zone: 2a
Zone: 4a
Height: 9 m (30 ft)
Height: 23 m (75 ft)
Spread: 6 m (20 ft)
Moisture: dry, normal
Moisture: normal, wet
Light: full sun
Light: partial shade, full sun
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no
Berries: bunches of orange-red berries appear in late summer
Flowers: white
Growth rate: medium
Growth rate: fast
Life span: medium
Life span: long
Maintenance: high
Suckering: none
Suckering: none




Other Names: cascade mountain ash, greene mountain ash