Taxon  Report   7682 
Sonchus oleraceus  L.
Common sow thistle,  Common sowthistle, Sow thistle
Sonchus oleraceus
© 2004 Laura Ann Eliassen
Click on a photo to see it bigger.
Sonchus oleraceus
© 2008 Gary McDonald
Sonchus oleraceus
© 2009 Zoya Akulova
Sonchus oleraceus, 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 + photos)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Sonchus oleraceus
© 2008 Gary McDonald
Genus: Sonchus
weed, characteristic of disturbed places
Habitat: disturbed [Walker]
Wetlands: [U.S. Fish & Wildlife Service.]
Name Status:
Accepted by TJM2 + PLANTS + JM93
More information about  Sonchus oleraceus
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Photos on CalPhotos / Google Images
Photos and ID tips from

UC Integrated Pest Management Weed Photo Gallery
(profile of this plant as an agricultural weed)

Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


Search the International Plants Names Index

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]. 2016. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Oct 22, 2016).

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