California Native Plant Link Exchange
PLANT INFORMATION

Persicaria wallichii - Himalayan knotweed

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Calflora:  Taxon Report
Plant Characteristics CalPhotos
Distribution by watershed Google Image
Observation Hotline Google
Lifeform:
Perennial herb 		Family:
Polygonaceae 		Wetland:
likely (FAC) 		Not Native
invasive weed
What plants grow with Persicaria wallichii ?

New Names:
Polygonum polystachyum

Plant Communities:
Weed (disturbed places)
wetland-riparian

Synonyms:
Aconogonon polystachyum
Persicaria polystachya
Polygonum polystachyum

Distribution

Counties:
Del Norte
Humboldt
Mendocino
Santa Cruz

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