Polygonum cuspidatum
Siebold & Zucc.
Japanese knotweed
Not an active name
Polygonum cuspidatum is a perennial herb that is not native to California.
New name: Fallopia japonica
Cal-IPC rating: moderate
one or more occurrenceswithin a 7.5-minute quadrangle
The blue points on the map indicate observations in Calflora.
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escaped cultivar
