Summary ²

Water-pepper, water pepper or marshpepper knotweed (Persicaria hydropiper, syn. Polygonum hydropiper) is a plant of the family Polygonaceae. It grows in damp places and shallow water. It is a widespread plant, found in Australia, New Zealand, temperate Asia, Europe, and North America. It has some use as a spice because of its pungent flavor.

Sources and Credits

1. (c) James Bailey, some rights reserved (CC BY-NC), uploaded by James Bailey
2. (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Persicaria_hydropiper

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