Black Locust vs Swamp White Oak - TreeTime.ca

Black Locust vs Swamp White Oak

Quercus bicolor

Robinia pseudoacacia

Swamp White Oak
Black Locust

The Swamp White Oak is a medium-sized deciduous tree native to North America. It is commonly found in swamps, lowlands, floodplains, and near streams and lakes. The leaves are two-toned, green on top and silvery-white on the undersides, adding to the visual appeal of this popular shade tree.

In the fall, the Swamp White Oak produces acorns which are an important food source for wildlife. It also provides a habitat for the larvae of many butterfly and moth species, playing an important ecological role. Although its growth is slow in the first few years, once the roots are established, it can achieve faster annual growth.

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.

Swamp White Oak Quick Facts

Black Locust Quick Facts

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Zone: 4a
Zone: 3a
Height: 15 m (50 ft)
Height: 12 m (40 ft)
Spread: 15 m (50 ft)
Spread: 8 m (25 ft)
Moisture: normal, wet
Moisture: dry, normal
Light: partial shade, 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: acorns
Growth rate: medium
Growth rate: fast
Life span: long
Life span: long
Suckering: none
Suckering: high



Toxicity: mildly toxic to humans, cats, and dogs

Other Names: bicolor oak
Other Names: false acacia, yellow locust