Herbarium of the Ancients — Detailed Record

Cyperus rotundus

Please read before use: the information below describes traditional and informational uses — it does not replace the advice of a healthcare professional. In case of doubt, pregnancy, breastfeeding, ongoing treatment, or use in children, seek advice before use.

Enhanced precautions for this plant: Not recommended during pregnancy due to traditional use related to the female cycle, which suggests a possible action on the uterus. Avoid during breastfeeding as a precaution, due to insufficient data. Do not use without advice from a healthcare professional if taking medication, particularly anticoagulants. Prolonged or high-dose use is not documented as safe; favor occasional and moderate use.

Decoction — Root

Traditional root decoction

The dried and cut root is gently boiled in water for a few minutes, then left to steep covered. This preparation was traditionally reserved for occasional use, under the guidance of a knowledgeable practitioner. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.

Powder — Root

Root powder poultice

The dried root is ground into a fine powder, then mixed with a little warm water or vegetable oil to form a paste. This paste was applied topically to the skin according to ancient folk uses. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.

Where to find it

Sourcing the plant

Dried nutgrass root is found primarily at herbalists specializing in Asian plants or in Oriental spice shops, more rarely cultivated in European gardens due to its invasive nature.

Harvest season

When to harvest it

The rhizomes are traditionally harvested in late summer or autumn, once the plant is well developed, in the moist soils where it thrives.

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