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 Placer: 1 Stanislaus: 1
Colusa: 1 Los Angeles: 2 Riverside: 1 Tehama: 1
Contra Costa: 2 Marin: 1 San Diego: 4 Tuolumne: 1
Del Norte: 2 Mariposa: 9 San Mateo: 2
Fresno: 1 Monterey: 2 Santa Clara: 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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/21/2024).