Pennyroyal
Scientific Name: Mentha pulegium
Botanical and Historical Origin
Europe and the Middle East. The American species (Hedeoma pulegioides) has a similar strong peppermint-like scent.
Evolution of Historical Use
The Roman name 'Pulegium' relates to fleas (pulex), as the strong scent was used to repel them. Highly controversial in history due to its use in reproductive control.
Traditional Cultivation and Harvesting
Small, low-growing member of the mint family. Prefers moist, partially shaded areas. Harvest in late summer.
Historical Medicinal Profile
Historical Internal Use
historical abortifacient, emmenagogue
Historical External Use
flea and tick repellant
Safety and Modern Toxicology
Essential oil is highly toxic, causes liver failure and death. Historical use only.
Circular Codex References
This ingredient is also documented in our livestock-focused Plant Codex, where you can find detailed information on its identification, veterinary safety, and farmstead management.
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