Common names: spotted knapweed
Centaurea diluta (spotted 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.Rating: Watch
- Plant Risk Assessment - An evaluation of the potential for a plant to be invasive in California.
- Cal-IPC News - Our quarterly newsletter. Each issue is available as a pdf.
- Cal-IPC Symposium Proceedings - Presentations and papers from our annual Symposium.
- Don't Plant a Pest! - Select your region to find non-invasive alternatives to ornamental species. Also see our statewide brochure on trees.
None for this species.