Bodies · gardens · medicine · evidence
Historical sources imagined menstrual blood as powerful enough to repel crop pests, heal illness, spoil wine, kill plants, protect doorways, or control fertility. The record is real—but it does not support every modern story told about it.
Read the evidence carefully
The surviving evidence is cross-cultural but uneven. Egyptian and Chinese texts preserve direct remedies; Indian medical traditions theorize menstrual blood as reproductive material; Greco-Roman writers record medicine, magic, and crop ritual. North American evidence is much later and cannot be projected back to Pliny’s time.
Africa · Asia · Europe · North America
Dates refer to the surviving manuscript, archaeological context, or modern study—not necessarily the first appearance of a belief. A written recipe records a tradition; it does not prove effectiveness or widespread use.
Remedy Eb 808 directs that a woman’s breasts be bathed in the blood of someone experiencing menstruation for the first time, with the abdomen and thighs rubbed as well, to prevent sagging and excess breast milk.
Evidence: direct medical text, but roughly 1,600 years earlier than Pliny.
Read Papyrus Ebers, Eb 808 — Leipzig Academy of Sciences ↗Medical texts from Mawangdui Tomb 3 record treatments for gu—a category encompassing poisoning, infestation, or demonic illness—including ingesting the burnt remains of a menstrual cloth and applying menstrual blood mixed with cinnamon.
Evidence: securely excavated Western Han manuscripts buried in 168 BCE, about 245 years before Pliny’s encyclopedia.
Read the Cambridge history and translated evidence ↗One bamboo-strip recipe says that, for “madness (or seizures?)” accompanied by internal bleeding that would not emerge, a young woman’s menstrual cloth should be rinsed in a cup of water and the liquid drunk.
Evidence: a direct Han-period text, but acquired through the antiquities market rather than a controlled excavation; its provenance is weaker than Mawangdui’s.
Read the translation and provenance discussion ↗The layered Caraka Saṃhitā and Suśruta Saṃhitā traditions describe menstrual blood (ārtava or rajas) as a female reproductive material that combines with semen, and assess its color, smell, and consistency when discussing health and fertility.
Evidence: a near-period medical tradition with later redaction—not a recipe for administering collected menstrual blood and not a gardening practice.
Read the sourced overview of early Indian medical texts ↗Columella describes a menstruating woman circling garden beds to repel caterpillars. Pliny catalogs agricultural danger and protection alongside topical remedies, fever and epilepsy treatments, reproductive recipes, amulets, and doorway protection—sometimes credulously and sometimes with explicit disbelief.
Evidence: direct elite male-authored agricultural and encyclopedic texts. They report claims, not clinical outcomes or women’s own testimony.
Columella, De Re Rustica 10.357–368 ↗Pliny, Natural History 28.23 ↗PGM XXXVI.320–332 instructs the practitioner to steep bitter-vetch seeds in a menstruating woman’s menses as part of a larger contraceptive procedure involving a frog and an amulet.
Evidence: a magical handbook preserved from Egypt. It is geographically African and culturally Greco-Egyptian; it should not be generalized to all Egyptian or African practice.
Read PGM XXXVI.320–332 in Betz’s translation ↗Thomas Buckley’s cultural reconstruction examines Yurok menstrual observances as sources of women’s spiritual and personal power, challenging earlier interpretations that reduced them to pollution or male exclusion.
Chronology warning: this is twentieth-century ethnographic reconstruction, not first-century evidence, and it does not document menstrual blood as fertilizer.
Buckley, “Menstruation and the Power of Yurok Women” ↗Maureen Trudelle Schwarz records Navajo consultants connecting inappropriate contact with menstruating women or menstrual blood to arthritis and rheumatism, with explanations linked to oral histories.
Chronology warning: this documents contemporary understandings of danger and illness—not medicinal or gardening use, and not evidence from Pliny’s period.
Schwarz, “Allusions to Ancestral Impropriety” ↗Comparative finding: the closest securely dated parallel to Pliny is Western Han China. No comparably dated North American record was found, and none of these African, Asian, European, or North American sources documents menstrual blood being used as garden fertilizer.
Field and garden
Pliny the Elder and Columella describe the menstruating body as an agricultural force. Carefully deployed, it could supposedly protect a crop; encountered at the wrong time, it could destroy one.
Pliny reports that a menstruating woman who stripped and walked around a wheat field would cause caterpillars, worms, beetles, and other vermin to fall from the grain. In his Cappadocian account, women moved through fields with garments raised.
Other versions required bare feet, dishevelled hair, and a loosened girdle. Columella repeats the pest-control operation in verse and prose, embedding it in an elite Roman manual of estate agriculture.
Pliny warns that performing the walk at sunrise could dry the crop. Touch was said to harm young vines and kill rue and ivy; bees supposedly abandoned hives touched by a menstruating woman.
The claims joined magic, natural history, and labor management. Recent scholarship reads them as imagined farm-risk strategies that assigned enslaved and dependent women’s bodies a practical role inside the estate.
“If a woman strips herself naked while she is menstruating, and walks round a field of wheat, the caterpillars, worms, beetles, and other vermin, will fall from off the ears of corn.”Pliny the Elder, Natural History 28.23 ↗ · nineteenth-century translation
Remedy, amulet, counter-magic
Pliny introduces the subject as a catalogue of “marvellous powers” and “monstrous effects.” He explicitly rejects the conflicting reproductive claims as monstrous and irreconcilable; elsewhere he records remedies attributed to named authorities, “many writers,” or common agreement. Their inclusion records a medical tradition, not clinical effectiveness.
| Reported use | Preparation or action | Description of Claim | How to read it |
|---|---|---|---|
| Gout, sores, swellings, tumors, erysipelas, boils, and eye complaintsSource: Pliny, Natural History 28.23 ↗ | Topical application, or touch by a menstruating woman | Pliny says “many writers” report certain remedial properties despite the fluid’s supposedly baneful nature. | A transmitted general claim, not one Pliny tests or clinically demonstrates |
| Tertian and quartan feversSource: Pliny, Natural History 28.23 ↗ | Blood enclosed in black ram’s wool and a silver bracelet; or rubbed on the soles | Laïs and Salpe are cited for the wool-and-bracelet remedy; Sotira calls rubbing the soles the most efficient cure. | Named women preserve a medical tradition, but attribution is not evidence of effectiveness |
| Epileptic seizureSource: Pliny, Natural History 28.23 ↗ | Rubbing the patient’s soles, ideally without the patient’s knowledge | Sotira describes this as an excellent way to revive a person during an epileptic attack. | A specific midwife-attributed claim reported without clinical verification |
| Rabies or hydrophobiaSource: Pliny, Natural History 28.23 ↗ | Stained wool worn as an amulet, or cloth placed beneath a drinking vessel | Pliny attributes one amulet to Laïs and Salpe and calls the drinking-vessel practice universally agreed, explaining it through “sympathy.” | Sympathetic-magic reasoning presented as customary knowledge, not tested medicine |
| HeadacheSource: Pliny, Natural History 28.23 ↗ | Fluid reduced to ash, mixed with rose oil, and placed on the forehead | Pliny calls the preparation “equally certain” and “very useful,” particularly for women. | Strong authorial wording still does not supply clinical evidence |
| Ulcers on working animalsSource: Pliny, Natural History 28.23 ↗ | Ash mixed with furnace soot and wax | Pliny presents this veterinary cure as a “well-known fact.” | A confidently recorded traditional remedy, not an efficacy study |
| Abortion, fertility, or barrennessSource: Pliny, Natural History 28.23 ↗ | Plant-root charcoal quenched in menstrual fluid; grains soaked in it | Pliny calls the accounts of Laïs and Elephantis contradictory, “monstrous and irreconcileable,” and advises refusing them credit altogether. | The table’s clearest example of a claim he explicitly rejects as unbelievable |
| Protection from harmful magicSource: Pliny, Natural History 28.23 ↗ | Touching doorposts with menstrual fluid | Pliny calls the practice universally acknowledged and says he is pleased to believe it, while immediately describing magicians as exceptionally dishonest. | Protective counter-magic recorded with an unstable mix of assent, irony, and skepticism |
Agency and attribution
Sometimes the record names women as medical authorities. More often it tells landowners what a woman’s body could supposedly accomplish. Those are not the same kind of evidence.
Pliny attributes fever and rabies remedies to Laïs and Salpe. Their work reaches us indirectly, through a male encyclopedist, but the attribution matters: women were not merely patients in this medical world.
Sotira is named as the source for rubbing menstrual fluid on a patient’s feet to address recurrent fever and epilepsy. This is the clearest woman-linked therapeutic instruction in the chapter.
Pliny assigns abortive and sterilizing recipes to Laïs and Elephantis, then says their claims about fertility and barrenness conflict and should be rejected.
Pliny and Columella do not give us women’s testimony about the field ritual. The agricultural labor may have been assigned to enslaved or dependent women whose own explanations were never written down.
A modern story checked
No dependable source found in this review instructs women to collect menstrual fluid, dilute it, compost it, or feed it to plants. Historical “garden use” should not be silently converted into a fertilizer claim.
The woman walks, touches, reveals, or circles. The supposed agricultural effect comes from her menstruating presence—not from measuring or applying a nutrient solution.
Modern “moon blood” gardening may carry personal, spiritual, ecological, or waste-reduction meaning. Without a specific historical source, it should be described as modern practice rather than recovered ancient women’s knowledge.
History is not instruction
Research on menstrual fluid’s cellular and wound-repair properties is promising, but it takes place in controlled laboratories. It does not validate ancient remedies or home medical use.
Menstrual fluid contains blood, endometrial cells and tissue, immune cells, cellular debris, and other biological material. Human blood can carry bloodborne pathogens. Do not consume it, share it, put it into another person’s food or drink, or apply it to wounds. Avoid using it where other people may encounter it or on edible crops. For health questions, use qualified medical guidance.
Source ledger
The historical sources appear first in chronological order. Interpretive scholarship and current safety guidance follow separately so ancient claims are not confused with modern evidence.
Method note: This page distinguishes a text reporting a practice from proof that the practice was common, effective, or understood the same way by women themselves. No uncited cross-cultural tradition has been added simply because it resembles a modern claim.
