Common names: false yellowhead
Dittrichia viscosa (false yellowhead) is a perennial herb/subshrub (family Asteraceae) with golden-yellow flowers and thin toothed leaves found in the Sacramento Valley and San Francisco Bay area in California. It is native to the Mediterranean Basin. It favors grasslands, wetlands, and riparian and bottomland habitat. It reproduces by seed and is spread primarily via wind and water.
Cal-IPC Rating: Watch
CDFA Rating: A?
Plant Risk Assessment
Plant Risk Assessment- An evaluation of the potential for a plant to be invasive in California.
Weed Management NotesNo Weed RIC Management Notes are available for this species. Check for information on other species in the genus on the Weed RIC site.
Cal-IPC Newsletter Articles
- EDRR in action: False yellowhead indentification and control at Hunter's Point Naval Shipyard. Morgan, Cree; Calhoun, Phil. Vol 30, Issue 1
- FROM THE DIRECTOR’S DESK: Renewing the Cal-IPC Inventory. Johnson, Doug. Vol 25, Issue 2
Cal-IPC Symposium Presentations
Presentations are linked where available. Where a presentation is not available, find more information by reading the abstract in the Cal-IPC Symposia Archive.
- Regional EDRR with Bay Area WMAs. Johnson, Doug; Valentine, Nicole (2022)
- Weed Alerts and CDFA Update. Kelch, Dean (2015)
- Weed Alerts! DiTomaso, Joseph (2014)
Other Dittrichia viscosa Information
- CalPhotos - Images of plants taken mostly in California.
- Calflora - Distribution map and records of this species in California.
- CalWeedMapper - Distribution map of this species in California with ability to determine regional priorities.
- EDDMapS - Distribution of this species in North America.
- Jepson Interchange - Information on this plant's taxonomy, biology, and distribution from UC Berkeley's Jepson Herbarium.
- USDA PLANTS Database - Information on identification and distribution, with links to websites in individual states.