Polygonaceae
Milkwort knotweed
Polygonum polygaloides
- Family
- Polygonaceae
- Genus
- Polygonum
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Common names
By language (1)
- English
- Milkwort knotweed
Synonyms
- Polygonum polygaloides subsp. polygaloides
- Polygonum polygaloides var. montanum Brenckle
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual
- In the US and Canada
- Canada: native, Lower 48 states: native
Photos
Photo: Dean Wm. Taylor, CC BY 2.0, from Wikimedia Commons
More in Polygonum
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- Bellard's smartweedPolygonum patulumPolygonaceae
- European knotweedPolygonum arenariumPolygonaceae
- Narrowleaf knotweedPolygonum bellardiiPolygonaceae
- Polygonum cognatumPolygonaceae
- Horse-tail knotweedPolygonum equisetiformePolygonaceae
- KnotweedPolygonum oxyspermumPolygonaceae
- Douglas' knotweedPolygonum douglasiiPolygonaceae
- Erect knotweedPolygonum erectumPolygonaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.