naturalizedPolygonaceae

Polygonum aviculare

Prostrate Knotweed

Naturalized (non-native)non-native

Introduced and now reproducing on its own in the wild.

Polygonum aviculare or common knotgrass is a plant related to buckwheat and dock. It is also called prostrate knotweed, birdweed, pigweed and lowgrass. It is an annual found in fields and wasteland, with white flowers from June to October. It is widespread across many countries in temperate regions, apparently native to Eurasia and North America, naturalized in temperate parts of the Southern Hemisphere.

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