Large deciduous tree reaching heights of 36.6 meters (120ft). Compound leaves with slightly alternate, heart-shaped leaflets that may be uneven at the base. Leaves are slightly hairy on their undersides. Fruits are round and present October through November.
Found in dense, diverse woods. Ranges throughout Eastern half of United States.
Uses and Parts Used
Inner bark tea used as an emetic and laxative. Bark chewed for toothache.
Fruit husk used for ringworm, colic, and inflammation.
Leaf tea has astringent properties and is insecticidal against bedbugs. Also has astringent and antifungal properties.
Recent studies suggest Black Walnut leaf extracts have antiviral activity and are effective against certain types of tumors. Juglone, a compound in the leaves, has the same effect as Valium (tm). Fruits husks and leaves may cause dermatitis.