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Floristic Inventory of the Florida Keys Database Online

Sonchus oleraceus L.
Common sowthistle

Sonchus oleraceus
Copyright by: Roger L. Hammer

Family: Asteraceae

Group: Dicot

Substrate: Terrestrial

Habit: Herb

Perennation: Annual

Native Range: Europe; now a widespread weed.

Map of select IRC data for peninsular Florida

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Not Native, Naturalized

SOUTH FLORIDA Cultivated Status: Not Cultivated

Comments: For more images, click on the Atlas of Vascular Plants link below.

FLORIDA KEYS Occurrence: Present

FLORIDA KEYS Native Status: Not Native, Naturalized

Map of select IRC data for the Florida Keys

Florida Keys History and Distribution: Reported in 1884 by J. Cosmo Melvill for the island of Key West.  Reported in 1913 by John Kunkel Small for pinelands and disturbed areas throughout the Florida Keys.  Occasionally naturalized.

Other data on Sonchus oleraceus available from :


Sonchus oleraceus has been reported from the following 7 conservation areas in the FLORIDA KEYS :
Occurrence Native Status
Biscayne National Park, Florida Keys Section Possibly Extirpated Not Native, Naturalized
Crocodile Lake National Wildlife Refuge Present Not Native, Naturalized
Dagny Johnson Key Largo Hammocks Botanical State Park Present Not Native, Naturalized
Dry Tortugas National Park Present Not Native, Naturalized
John Pennekamp Coral Reef State Park Present Not Native, Naturalized
Long Key State Park Present Not Native, Naturalized
National Key Deer Refuge Possibly Extirpated Not Native, Naturalized




Sonchus oleraceus has been reported for the following habitat in THE FLORIDA KEYS :
Disturbed Upland


All Images:

Sonchus oleraceus
Copyright by: Roger L. Hammer