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Robinia pseudoacacia 'Frisia'
Robinia pseudoacacia 'Frisia'

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Zones 1-24, 29-45
Full Sun
Regular WaterMinimal Water
Moderate, Minimal
Bark, leaves, and seeds are poisonous if ingested.

Robinia pseudoacacia

Black Locust
Fabaceae (Leguminosae)
Deciduous, Trees


Fairly fast growing plants, well adapted to hot, dry regions. Leaves are divided like feathers into many roundish leaflets. Clusters of white or pink, sweet pea-shaped flowers bloom from midspring to early summer, followed by bean-like pods about 4 in. long.

Locust trees tolerate poor soil and can get by on little or no water, but they do have some drawbacks: their wood is brittle, roots are aggressive, and plants often spread by suckers.

Robinia pseudoacacia
Robinia pseudoacacia

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Robinia pseudoacacia

Native to the eastern and central United States. Fast growth to 40 to 75 ft. tall, 30 to 60 ft. wide, with rather sparse, open branching habit. Deeply furrowed brown bark. Thorny branches. Leaves divided into 7-19 leaflets, each 1-2 in. long. White, fragrant, 1/2–3/4-in.-long flowers are held in dense, pendent clusters that reach 4-8 in. long.

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