Common names: North African knapweed
Centaurea diluta (North African knapweed) is an annual herb/ (family Asteraceae) with pink-purple flowers and lobed leaves found in the San Francisco Bay area and south coast ranges of California. It is native to southwestern Europe. It favors grasslands. Its hairy seeds are dispersed via wind. It was said to have been introduced to Great Britain as a contaminant in bird seed.
Cal-IPC Rating: Watch
CDFA Rating: None?
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
- Celebrating park stewards. Cal-IPC. Vol 24, 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.
- 2019 Weed Alerts. Burger, Jutta; Price, Bob (2019)
Other Centaurea diluta 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.