Common names: Santa Maria feverfew
Parthenium hysterophorus (Santa Maria feverfew) is a herb (family Asteraceae) with white flowers and lobed leaves found in the south coast ranges of California. It is native to the American tropics. It favors grasslands and riparian and bottomland habitat. It is a prolific seed producer. Its seeds travel via wind, water, birds, vehicles, farm machinery and other animal traffic.Cal-IPC Rating: Watch
Plant Risk Assessment
Plant Risk Assessment- An evaluation of the potential for a plant to be invasive in California.
Cal-IPC Newsletter Articles
- CDFA expands noxious weed list and revises process. Kelch, Dean. Vol 23, Issue 2
Cal-IPC Symposium Presentations
None for this species.
Other Parthenium hysterophorus Information
- CalFlora - Distribution information based on submitted observations and herbarium specimens.