Black Locust vs Russian Mountain Ash - TreeTime.ca

Black Locust vs Russian Mountain Ash

Robinia pseudoacacia

Sorbus aucuparia Rossica

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Black Locust
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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.

The Russian Mountain Ash is a stunning ornamental tree with the perfect pop of colour. It bears white flowers in the spring and gorgeous orange berries in the fall. Birds enjoy the berries that persist into the winter. It grows tall and can thrive in an urban setting making this an attractive ornamental tree for your landscaping project.

Black Locust Quick Facts

Russian Mountain Ash Quick Facts

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Zone: 3a
Zone: 2a
Height: 12 m (40 ft)
Height: 9 m (30 ft)
Spread: 8 m (25 ft)
Spread: 5 m (18 ft)
Moisture: dry, normal
Moisture: any
Light: full sun
Light: full sun
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no
Berries: orange-red
Flowers: Creamy white flowers in a pyramidal shape bloom in may-june
Flowers: showy white
Bark: dark reddish brown to balck with furrows
Bark: shiny grey
Growth rate: fast
Growth rate: medium
Life span: long
Life span: medium
Suckering: high
Suckering: none




Other Names: false acacia, yellow locust
Other Names: russian rowan