American Mountain Ash vs Black Locust - TreeTime.ca

American Mountain Ash vs Black Locust

Sorbus americana

Robinia pseudoacacia

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American Mountain Ash
Black Locust

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.

Note:This species is currently unavailable. Grow your own using American Mountain Ash seeds at SeedTime.ca.

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.

American Mountain Ash Quick Facts

Black Locust Quick Facts

Zone: 2a
Zone: 3a
Height: 10 m (32 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
Fall colour: scarlet red
Berries: bunches of orange-red
Flowers: white clusters, spring
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: dogberry
Other Names: false acacia, yellow locust