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Walnut, black


Scientific name: Juglans nigra

Family: Juglandaceae

Origin: E North America

Medicinal use: Black walnut drupes contain juglone (5-hydroxy-1,4-naphthoquinone), plumbagin (yellow quinone pigments), and tannin. These compounds cause walnuts to stain cars, sidewalks, porches, and patios, in addition to the hands of anyone attempting to shell them. The brownish-black dye was used by early American settlers to dye hair.

Out of stock