Juglans nigra
Strongest source of the allepathic chemical, Jugalone, which injures or kills members of Solanaceae and Ericaceae. Plentiful nuts with not seamed husks which will stain anything touching them. Outstanding dark furniture lumber source. Fall web worm problematic.
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| Common Name | black walnut |
| Landscape Zone | LZ3 |
| Firewise Rating | Firewise (1) |
| Urban Use | High |
| Invasive | No |
| Native | Yes |
| Utility Use | No |
| Ladder Potential without Pruning | No |
| Cold Hardiness Zone | 5 |
| Heat Tolerance Zone | 7 |
| Sun Exposure | Full Sun |
| Soil pH | Adaptable |
| Tolerance to Poorly Drained Soils | Low |
| Salt Tolerance | Yes |
| Drought Resistance | High |
| Pest Resistance | High |
| Growth Rate | Slow |
| Plant Form | Columnar |
| Plant Height Mature Size in feet | 50 |
| Plant Height Mature Size in meters | 15 |
| Trunk Size | Single |
| Bark | Furrowed |
| Leaf Arrangement | Alternate |
| Leaf Persistance | Deciduous |
| Leaf Color | Green None |
| Leaf Type | Compound |
| Leaf Surface | Pubescent |
| Leaf Characteristics | Papery-thin |
