Page author: David Giblin
Fallopia ×bohemica
Bohemian knotweed, hybrid knotweed

Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to Oregon, east to Montana, and in scattered locations across North America.

Habitat: Riparian zones, roadsides, ditches, wastelots, and other disturbed open areas generally at low elevations.

Flowers: July-October

Origin: Introduced from eastern Asia

Conservation Status: Not of concern


[none provided]

Accepted Name:
Fallopia ×bohemica (Chrtek & Chrtková) J.P. Bailey
Publication: Watsonia. 17: 443. 1989.

Synonyms & Misapplications:
Polygonum ×bohemicum (Chrtek & Chrtková) Zika & Jacobson
Reynoutria ×bohemica Chrtek & Chrtková
Additional Resources:

PNW Herbaria: Specimen records of Fallopia ×bohemica in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Fallopia ×bohemica checklist entry.

E-Flora BC: Fallopia ×bohemica atlas page.

CalPhotos: Fallopia ×bohemica photos.

USDA Plants: Fallopia ×bohemica information.

12 photographs:
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