Taxonomy
| Clade | angiosperm |
|---|
| Family | Juglandaceae |
|---|
| Genus | Juglans |
|---|
| Species | nigra |
|---|
| Common Name | black walnut |
|---|
| iTree Code | JUNI |
|---|
Plant Form
| Form | Tree: large, broad canopy |
|---|
| Height | 100 feet |
|---|
| Spread | 100 feet |
|---|
| Deciduous | Yes |
|---|
Identification Description
| Foliage | pinnately compound 10-20” long, (10-20) leaflets, may be missing terminal leaflet |
Leaf Type
 |
Compound - Pinnate |
|---|
| Bark | dark brown/gray, narrow furrows |
|---|
| Bud | terminal: pale gray/brown, fuzzy, rounded |
Bud Arrangement
|
Alternate |
|---|
| Twig | stout, light brown current twig fuzzy, inside (pith) divided into tan cambers; leaf-scar said to resemble "monkey" face |
|---|
| Flower | male: pendulous catkins; female: small spike, pinkish |
|---|
| Fruit | round green husk about golf ball sized, producing dark stain, very fragrant |
|---|
| Fall Color | yellow |
|---|
Site Characteristics
| USDA Zones
|
pH Levels | Salt Tolerance |
| Min | 4a |
Min | 6.5 |
Soil | Intolerant |
| Max | 8a |
Max | 8.0 |
Spray | Intolerant |
| Shade Tolerance | Drought Tolerance | Allelopathy |
| Intolerant |
High |
Yes |
