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Knotweeds | Polygonum cuspidatum, Polygonum x bohemicum, Polygonum sachalinense

May contain: plant, vegetation, leaf, grass, flower, acanthaceae, and amaranthaceae
Photo Credit: Jan Samanek
May contain: leaf, plant, grass, vegetation, and flower
Photo Credit: Nanna Borcherdt
May contain: leaf, plant, and vegetation
Photo Credit: Chris Evans
May contain: leaf, plant, vegetation, and grass
Photo Credit: Steve Manning
May contain: plant, vegetation, garden, nature, outdoors, person, grass, herbal, herbs, leaf, and photography
Photo Credit: Randy Westbrooks
May contain: plant, vegetation, leaf, grass, flower, acanthaceae, and amaranthaceae
May contain: leaf, plant, grass, vegetation, and flower
May contain: leaf, plant, and vegetation
May contain: leaf, plant, vegetation, and grass
May contain: plant, vegetation, garden, nature, outdoors, person, grass, herbal, herbs, leaf, and photography

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’