Butternut (White Walnut) vs Black Locust - TreeTime.ca

Butternut (White Walnut) vs Black Locust

Robinia pseudoacacia

Juglans cinerea

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Black Locust
Butternut (White Walnut)

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.

Butternut is one of the few walnut varieties native to Canada. The nuts are sought after for their mild, sweet, and oily taste. Ensure this tree is planted in full sun and well-drained soil for best results.

Butternut is self-fertile but it has better yields when planted near other butternuts. It can survive in zone 2, but reliably produces nuts in zone 3.

A top CO2 absorbing species. Experts think this tree may help climate change more than others.

Black Locust Quick Facts

Butternut (White Walnut) Quick Facts

Zone: 3a
Zone: 2b
Height: 12 m (40 ft)
Height: 25 m (82 ft)
Spread: 8 m (25 ft)
Spread: 8 m (27 ft)
Moisture: dry, normal
Moisture: dry, normal
Light: full sun
Light: full sun
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no
Flowers: Creamy white flowers in a pyramidal shape bloom in may-june
Bark: dark reddish brown to balck with furrows
Nuts: brown shell, edible
Growth rate: fast
Growth rate: fast
Life span: long
Life span: medium
Maintenance: medium
Suckering: high
Suckering: none




Other Names: false acacia, yellow locust
Other Names: demon walnut, oilnut, white walnut