Calflora, a 501c3 non-profit
Distribution by County   7630    
Sisymbrium officinale  (L.) Scop.
Hedge mustard, Hedgemustard
Sisymbrium officinale is an annual herb that is not native to California.
Record Count by County

Alameda: 36 Lake: 3 Riverside: 32 Shasta: 2
Amador: 2 Los Angeles: 105 Sacramento: 57 Siskiyou: 2
Butte: 31 Marin: 46 San Benito: 6 Solano: 7
Calaveras: 5 Mariposa: 15 San Bernardino: 19 Sonoma: 369
Colusa: 1 Mendocino: 14 San Diego: 108 Stanislaus: 2
Contra Costa: 29 Merced: 4 San Francisco: 5 Sutter: 7
Del Norte: 2 Modoc: 1 San Joaquin: 4 Tehama: 18
El Dorado: 11 Monterey: 46 San Luis Obispo: 55 Tulare: 47
Fresno: 14 Napa: 13 San Mateo: 12 Tuolumne: 10
Glenn: 1 Nevada: 13 Santa Barbara: 77 Ventura: 20
Humboldt: 12 Orange: 31 Santa Clara: 33 Yolo: 5
Kern: 8 Placer: 9 Santa Cruz: 19 Yuba: 2

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]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/19/2026).