Culinary uses

Flavor · Pairings

Persicaria hydropiper, also known as water pepper, marshpepper knotweed, arse smart or tade, is a plant of the family Polygonaceae. A widespread species, Persicaria hydropiper is found in Australia, New Zealand, temperate Asia, Europe and North America. The plant grows in damp places and shallow water. Cultivated varieties are eaten in East Asia for their pungent flavor.

Medicinal uses

T Traditional Use

Not medical advice

Authoritative scientific evidence is not available for this herb. The information below reflects traditional or ethnobotanical uses documented in public sources. Do not use as a substitute for professional medical advice, diagnosis, or treatment. Consult a qualified healthcare provider before use — especially if you are pregnant, nursing, or taking medication.

No structured medicinal summary is currently available for this herb in our public-source corpus. Traditional uses, if documented, would be referenced here in a future update.