Scientific Name
Polygonella cuspidatum
Common Name
Japanese knotweed
Wildflowers
Plant Fact Sheets
Consumer Hort
Life Cycle:
Annual
Height:
4 to 7 feet
Flower/fruit:
Greenish white flowers in branching spikes from the leaf axils
Flowering Season:
Late summer into fall
Foliage:
4 to 6 inch broad, sharply pointed alternate leaves; large, hollow, jointed, mottled stems
Site:
Waste places, roadsides
Comments:
Escaped from cultivation
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Erv Evans
, Consumer Horticulturist
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Web Updates by: Ebony McLeod and Heather Monroe
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Images © by Erv Evans
