St. John's Wort
Scientific Name: Hypericum perforatum
Botanical and Historical Origin
Europe and North Africa, now naturalized globally. Its name comes from the tradition of harvesting it on St. John's Day (June 24).
Evolution of Historical Use
Used in the Middle Ages to drive away evil spirits ('Fuga Daemonum'). Today, it is one of the most widely studied botanical agents for emotional well-being.
Traditional Cultivation and Harvesting
Hardy perennial with distinct yellow flowers. Small perforated glands in the leaves (seen when held to light) contain the active hypericin.
Historical Medicinal Profile
Historical Internal Use
nerve pain, melancholy (historical)
Historical External Use
nerve damage, burns, sciatica (oil)
Safety and Modern Toxicology
Interacts dangerously with many pharmaceuticals (antidepressants, birth control). Causes photosensitivity.
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.
Comments