Calflora, a 501c3 non-profit
Distribution by County   10892    
Fallopia sachalinensis  (F. Schmidt Petrop.) Ronse Decr.
Giant knotweed
Fallopia sachalinensis is a perennial herb that is not native to California.
Cal-IPC rating: moderate
Record Count by County

Butte: 1 El Dorado: 1 Mendocino: 6 San Luis Obispo: 2
Del Norte: 71 Humboldt: 38 Nevada: 2 Santa Cruz: 3

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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/21/2024).