Herbarium of the Ancients — Detailed Record

Alisma plantago-aquatica

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 and breastfeeding, as the plant is traditionally considered to have an action on body fluids and kidneys. Do not use in children without advice from a qualified healthcare professional. Prolonged use or high doses may disrupt fluid and mineral balance; advice from a professional trained in phytotherapy or traditional Chinese medicine is recommended before any use. Avoid in case of diuretic treatment or pre-existing kidney disease, due to risk of interaction or aggravation.

Decoction — Root

Traditional decoction of dried root

The dried and cut root is traditionally gently decocted in water for about fifteen minutes, then filtered. This preparation, derived notably from Chinese pharmacopoeia, requires professional guidance to adjust its use. Dosage to be validated with a healthcare professional or recognized pharmacopoeia before use.

Poultice — Leaves

Fresh leaf poultice

Fresh leaves, slightly crushed, were applied directly to the affected area in traditional external use. This practice remains anecdotal and poorly documented by modern sources. Dosage to be validated with a healthcare professional or recognized pharmacopoeia before use.

Where to find it

Obtaining the plant

Alisma can be found wild in wetlands of Europe, along the edges of ponds and slow-moving waterways; its dried root, often imported under the name Ze Xie, can also be found at certain herbalists specializing in traditional Chinese medicine.

Harvest season

When to harvest it

The root is traditionally harvested in late summer or autumn, when the plant has completed its flowering and its reserves are concentrated underground.

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