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 |