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Common sowthistle

Sonchus oleraceus -- Center for Aquatic and Invasive Plants

Sonchus oleraceus

Non-Native to Florida

common sowthistle

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    There are two species of sowthistle in Florida, both non-native. Common sowthistle, native to Europe, is a frequent invader of disturbed sites nearly throughout Florida (Wunderlin, 2003). It flowers from spring through summer. Sonchus oleraceus usually occurs in non-wetlands (estimated probability 67%-99%), but is occasionally found in wetlands (estimated probability 1%-33%).

    This exotic species is found in all U.S. states, including Alaska, and almost all of Canada, and is found in Greenland (Kartesz, 1999).