In France the leaf is used for sunburn and the treatment of dandruff. In Italy the preparation was used for repelling insects. According to researchers walnut leaves (as do the nuts) have bacteria-killing and anti-parasitic properties.
Tea can be made from the leaves and is said to be excellent for digestion.
Preparation: Dry the walnut leaf and chop before boiling them to make a strong tea. Once cooled, the tea can be used in compresses and rinses for the skin. To make a decoction (boiled tea) uses 1.5 ounces of dried leaf per 8 ounces of water, bring mixture to a boil and simmer gently for about 15 minutes. Adjust strength to personal preference.
The nuts each season are prolific and I have as yet figured out the most efficient method of harvesting them. My research has suggested everything from driving over the hard shell with my car, to boiling them first and drying, to purchasing an antique corn husker. In my retirement I will devote myself to cracking these hardy nuts and finding a means to distribute them. For right now the squirrels are greatly benefitting.
The black walnut has had many uses…Its shell makes for an excellent dye…the nuts can be turned into flour or appreciated on their own with the many health benefits afforded by its essence. The hard wood is highly valued in furniture making.