Persicaria wallichii Calflora

Distribution by County 11015

Persicaria wallichii Greuter & Burdet

Himalayan knotweed

Persicaria wallichii is a perennial herb that is not native to California.

There is a high risk of this plant becoming invasive in California according to Cal-IPC.

Record Count by County


Del Norte: 5	Humboldt: 128	Placer: 1

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: 11/23/2024).