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Knotweeds

Polygonum cuspidatum, Polygonum x bohemicum, Polygonum sachalinense

Perennial; small, white to green flowers in drooping clusters from leaf axils. Reddish brown and hollow stems. Leaves broad and ovate.

Plant Details

Habitat NotesNear water sources, along streams and rivers, wetlands, riparian areas and roadsides.
Mature Height6.5-13’
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