Taxon  Report   10892    
Fallopia sachalinensis  (F. Schmidt Petrop.) Ronse Decr.
Giant knotweed
Fallopia sachalinensis, a dicot, is a perennial herb that is not native to California. Cal-IPC rating: Moderate
Observation Search
(97 records)
one or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Genus: Fallopia
Wetlands: Occurs usually in non wetlands, occasionally in wetlands

Communities: escaped cultivar

Name Status:
Accepted by ICPN

PLANTS other name:
Polygonum sachalinense

Alternate Names:
ICPN: Polygonum sachalinense
More information about  Fallopia sachalinensis
Search (Flora of North America)

Photos on Google Images

Consortium of California Herbaria

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2020. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Feb 25, 2020).