Taxon  Report   11667 
Erigeron canadensis  L.
Canada horseweed
Erigeron canadensis
© 2018 Brian Charles
More photos from
CalPhotos / Calflora
Erigeron canadensis
© 2010 Louis-M. Landry
Erigeron canadensis
© 2009 Neal Kramer
Erigeron canadensis, a dicot, is an annual herb that is native to California, is also found elsewhere in North America and beyond.

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Plant Characteristics
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Bloom Period
Erigeron canadensis
© 2005 Luigi Rignanese
Genus: Erigeron
weed, characteristic of disturbed places, wetland-riparian
Habitat: disturbed
Wetlands: Occurs usually in non wetlands, occasionally in wetlands
Distribution by County 

Add an Observation of  Erigeron canadensis

Name Status:
Accepted by JEF
PLANTS accepted name: Conyza canadensis var. canadensis
Alternate Names:
(according to)

ICPN: Conyza canadensis
ICPN: Conyza canadensis var. canadensis
More information about  Erigeron canadensis
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Photos on

Jepson eFlora

Records from the Consortium of California Herbaria


Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Aug 17, 2018).

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