Calflora, a 501c3 non-profit
Distribution by County   1662    
Carthamus lanatus  L.
Woolly distaff thistle
Carthamus lanatus is an annual herb that is not native to California.
Cal-IPC rating: high
Record Count by County

Calaveras: 9 Marin: 320 San Luis Obispo: 96 Solano: 1
Contra Costa: 1 Mendocino: 16 San Mateo: 113 Sonoma: 576
Humboldt: 9 Napa: 8 Santa Barbara: 4 Tuolumne: 4
Lake: 1 Nevada: 9 Santa Clara: 61 Ventura: 7
Los Angeles: 3 Orange: 1 Shasta: 3 Yolo: 4

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]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 12/11/2025).