Witnessed by: Western
Black walnut (Juglans nigra), of the Juglandaceae family. Large deciduous timber tree with aromatic compound leaves; native range: rich bottomland woods of eastern North America. Globally recognized as American walnut in English. The part used is green hull of the nut, leaf and bark. Astringent and bitter, staining deep brown-black from juglone.
In this cross-tradition database, we analyze how this substance operates across world medicine systems — tracking its traditional tastes, temperatures, tissue affinities, post-digestive effects, and planetary correspondences across Ayurveda, Unani, and Western herbalism.
BLACK WALNUT
IDENTITY
Name
- Common
- black walnut
- Scientific name
- Juglans nigra L.
- Family
- Juglandaceae
Form
- Part used
- green hull of the nut, leaf and bark
PROPERTIES
Nature
Taste
how the plant declares itself on the tongue
- Western
- astringent · bitter
Temperature
- Western
- warm, drying
Affinity
where in the body it travels
Organs / channels
- Western
- skin · intestines · mucous membranes
PRACTICE
Virtue
Actions
- Western
- anthelmintic, astringent, antifungal, alterative, mild laxative, detergent
Cautions
- Contraindications
- pregnancy; prolonged internal use limited by tannin
- Toxicity
- juglone may irritate; the hull stains skin and cloth
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