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Floristic Inventory of the Florida Keys Database Online

Youngia japonica (L.) DC.
Rocketweed, Oriental false hawksbeard

Youngia japonica
Copyright by: Keith A. Bradley

Family: Asteraceae

Group: Dicot

Substrate: Terrestrial

Habit: Herb

Perennation: Short Lived Perennial

Native Range: Southeastern Asia; 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 History and Distribution: IRC considers this an emerging invasive in South Florida.

SOUTH FLORIDA Cultivated Status: Not Cultivated

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: Not reported for the Florida Keys by John Kunkel Small in 1913. Occasionally naturalized. Mostly a weed of disturbed sites.

Other data on Youngia japonica available from :

Atlas of Florida Vascular Plants

Youngia japonica has been reported from the following 5 conservation areas in the FLORIDA KEYS :
Occurrence Native Status
Biscayne National Park, Florida Keys Section Present Not Native, Naturalized
Crocodile Lake National Wildlife Refuge Present Not Native, Naturalized
Dagny Johnson Key Largo Hammocks Botanical State Park Reported
John Pennekamp Coral Reef State Park Present Not Native, Naturalized
National Key Deer Refuge Possibly Extirpated Not Native, Naturalized




Youngia japonica has been reported for the following 4 habitats in THE FLORIDA KEYS :
Disturbed Upland
Disturbed Wetland
Pine Rockland
Rockland Hammock


All Images:

Youngia japonica
Copyright by: Keith A. Bradley
Youngia japonica
Copyright by: Roger L. Hammer