Materia Medica

Juglans nigra (Black Walnut), realistic botanical photo

Black Walnut (Juglans nigra) — American Walnut, Eastern Black Walnut

October 11, 2026

Black Walnut (Juglans nigra) complete Materia Medica retaining original findings on edible nuts, juglone, green hull and tree-nut allergy; adding five measured nut food, natural dye, ink and historic wash...