Black Locust (Robinia Pseudoacacia) is a perennial tree in the Fabaceae family with easy care difficulty. It requires low watering and full sun or partial shade light in USDA hardiness zones 4-9. This plant is toxic to cats and dogs — keep it out of reach of pets.

Robinia pseudoacacia is a fast-growing, deciduous tree in the pea family, native to the southeastern United States, widely cultivated for ornament, timber, and erosion control.

Black Locust

Black Locust

Robinia Pseudoacacia

Robinia pseudoacacia is a fast-growing, deciduous tree in the pea family, native to the southeastern United States, widely cultivated for ornament, timber, and erosion control.

Quick Facts

Type
tree
Lifecycle
perennial
Care Difficulty
Easy
Water Needs
Low
Light
Full Sun, Partial Shade
Hardiness Zones
4-9

Safety

⚠️
Not Pet Safe
⚠️
Not Child Safe
☠️
Toxic

Growing Conditions

Soil Types:clay, sandy, loamy, gravelly
Indoor:No
Outdoor:Yes
Garden Use:specimen, screen, hedge, nitrogen fixer, erosion control

Care Calendar

Monthly care tasks for Black Locust

Jan
Prune
Feb
Fertilize
Mar
Repot
Apr
Water+
May
...
Jun
...
Jul
...
Aug
...
Sep
...
Oct
...
Nov
...
Dec
...

Expert Care Tips

Pro tips from botanists and plant experts

Watering Tip

Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.

Humidity Trick

Group plants together to create...

Growth Hack

Rotate your plant every...

Photo Gallery10+ photos

Black Locust
Black Locust detail

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Taxonomy

Family:Fabaceae
Genus:Robinia