Are Polygonum Barbatum and Polygonum Hydropiper in the same botanical family?

Yes — both belong to Polygonaceae.

Can you substitute Polygonum Barbatum for Polygonum Hydropiper?

They are close relatives in the genus Polygonum, often substitutable with flavor adjustments.

Compare · per-herb profile

Polygonum Barbatum vs Polygonum Hydropiper

Polygonum barbatum · Polygonum hydropiper

Polygonum Barbatum

Polygonum barbatum

T Traditional Use

Family: Polygonaceae
Genus: Polygonum
Primary use: medicinal

Persicaria hydropiperoides, commonly called swamp smartweed, mild waterpepper, false waterpepper, or sometimes simply waterpepper, is a species of flowering plant in the buckwheat family. It has a widespread distribution across much of North America and South America. Its preferr…

Polygonum Hydropiper

Polygonum hydropiper

T Traditional Use

Family: Polygonaceae
Genus: Polygonum
Primary use: medicinal

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 pl…

At a glance

· Same genus (Polygonum) — close relatives, often substitutable.
· Both are primarily medicinal.
· Evidence tiers — Polygonum Barbatum: T; Polygonum Hydropiper: T.