Juglans nigra
Black Walnut, American Walnut
Tree Characteristics
Leaves:
Deciduous
Height:
15 - 23m
Width:
15 - 22m
Growth Rate:
Fast
Tree Tolerances
Plant Hardiness Zone:
4, 5, 6
Shade Tolerance:
Full Sun
pH Tolerance:
Tolerant of acid to alkaline soil (5.0 to 8.0)
Drought Tolerance:
Moderate
Flooding Tolerance:
Moderate
Salt Spray Tolerance:
Tolerant
Soil Salt Tolerance:
Sensitive
Planting site and Native Range
Planting Site:
Naturalization, Parks, Highway, Residential, Wide Median
Native to Ontario:
Yes
Native to North America:
Yes
Insects and Diseases
No serious or common issues in the urban environment.
Management Notes
- Fruit litter may be an issue
- Inhibits the growth of many other nearby plants by exuding allelopathic chemicals