Photos of Juglans nigra, Black Walnut.
Juglans nigra, Black Walnut fruit is harvested for nuts, their hard inner hull and the outer husk. It is one of the most important wild-harvested native plants with over 20 million pounds harvested per year. The green husk, itself, once dried, is an item in herbal products, such as de-worming formulations. The hard inner shell surrounding the walnut meat is used as an industrial abrasive. Sold in a variety of grades and particle sizes, as a soft, reusable abrasive, black walnut hulls are used to polish metals, stone and a range of other materials including everything from jewelry to gun casings. It's also used to create seals for use in the oil drilling industry, as an industrial filtration medium, and other applications.
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