Robinia pseudoacacia
Black Locust, False Acacia, Common Locust
Tree Characteristics
Leaves:
Deciduous
Height:
11 - 21m
Width:
6 - 11m
Growth Rate:
Fast
Tree Tolerances
Plant Hardiness Zone:
4, 5, 6
Shade Tolerance:
Full Sun Part Shade Full Shade
pH Tolerance:
Tolerant of acid to alkaline soil (5.0 to 8.0)
Drought Tolerance:
Very High
Flooding Tolerance:
Low
Salt Spray Tolerance:
Tolerant
Soil Salt Tolerance:
Tolerant
Planting site and Native Range
Planting Site:
Residential, Wide Median, Restricted Urban Site
Native to Ontario:
No
Native to North America:
Yes
Insects and Diseases
Most serious pest is Locust borer, however, cultivars have been developed that are resistant to this borer. Other issues include canker, powdery mildew, locust leaf miner but these are minor in comparison to the borer.
Management Notes
- Fruit litter may be an issue
- Thorns can be a safety concern for certain sites
- Root suckering occurs
- Known to naturalize or become invasive in certain regions