Taxon  Report   11667 
Erigeron canadensis  L.
Canada horseweed
Erigeron canadensis
© 2010 Louis-M. Landry
Click on a photo to see it bigger.
Erigeron canadensis
© 2009 Neal Kramer
Erigeron canadensis
© 1995 Saint Mary's College of California
Erigeron canadensis, a dicot, is an annual herb that is native to California and is also found elsewhere in North America and beyond.

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Observation Hotline
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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 [Walker]
Wetlands:Equally likely to occur in wetlands or non wetlands [U.S. Fish & Wildlife Service.]
Distribution by County 

Add an Observation of  Erigeron canadensis

Name Status:
Accepted by TJM2
Alternate Names:
(according to)

TJM2: Conyza canadensis
More information about  Erigeron canadensis
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Photos on CalPhotos / Google Images
Photos and ID tips from

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]. 2016. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Oct 25, 2016).

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