Scientific Name
Polygonella cuspidatum

Common Name
Japanese knotweed
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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