Calflora, a 501c3 non-profit
Distribution by County   13132    
Centaurea jacea  L.  ssp. pratensis  (W.D.J. Koch) ?elak.
Meadow knapweed
Centaurea jacea ssp. pratensis is an annual or perennial herb that is not native to California.
Cal-IPC rating: moderate
Record Count by County

Butte: 2 Humboldt: 76 Siskiyou: 15
Del Norte: 94 Kern: 2 Yuba: 1

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 03/23/2023).