Calflora, a 501c3 non-profit
Distribution by County   7680    
Sonchus arvensis  L.
Field sowthistle,   Perennial sow thistle
Sonchus arvensis is a perennial herb that is not native to California.
Record Count by County

Butte: 2 Humboldt: 2 Sacramento: 1 Siskiyou: 1
Colusa: 1 Los Angeles: 2 San Diego: 3 Tehama: 1
Contra Costa: 1 Mariposa: 3 San Mateo: 2 Tulare: 2
Del Norte: 2 Orange: 2 Santa Barbara: 3 Tuolumne: 1
Fresno: 1 Riverside: 1 Santa Clara: 2 Yolo: 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]. 2022. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 12/05/2022).