Taxon  Report   11009    
Persicaria hydropiper  (L.) Delarbre
Common smartweed
Persicaria hydropiper
© 2009 Gerald Carr
Photos from
CalPhotos / Calflora
Persicaria hydropiper
© 2009 Gerald Carr
Persicaria hydropiper
© 2009 Gerald Carr
Persicaria hydropiper, a dicot, is an annual herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Persicaria hydropiper
© 2009 Gerald Carr
Genus: Persicaria
Communities: wetland-riparian

Wetlands: Occurs in wetlands

Name Status:
Accepted by JEF

PLANTS accepted name:
Polygonum hydropiper

Alternate Names:
ICPN: Polygonum hydropiper
More information about  Persicaria hydropiper
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Photos on Google Images
Jepson eFlora

Records from the Consortium of California Herbaria


Search (Flora of North America)

website references from Google

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]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 22, 2019).