Calflora, a 501c3 non-profit
Distribution by County   7063    
Raphanus raphanistrum  L.
Jointed charlock, Painted charlock, Wild radish
Raphanus raphanistrum is an annual or perennial herb that is not native to California.
Record Count by County

Alameda: 49 Madera: 162 Riverside: 7 Shasta: 6
Amador: 3 Marin: 37 Sacramento: 25 Siskiyou: 1
Butte: 34 Mariposa: 5 San Benito: 1 Solano: 4
Colusa: 4 Mendocino: 16 San Bernardino: 1 Sonoma: 29
Contra Costa: 11 Merced: 8 San Diego: 38 Stanislaus: 12
Del Norte: 3 Modoc: 1 San Francisco: 4 Sutter: 6
El Dorado: 5 Monterey: 13 San Joaquin: 11 Tehama: 13
Fresno: 290 Napa: 13 San Luis Obispo: 14 Tulare: 256
Humboldt: 14 Nevada: 3 San Mateo: 19 Ventura: 5
Kern: 128 Orange: 54 Santa Barbara: 41 Yolo: 10
Kings: 1 Placer: 8 Santa Clara: 51 Yuba: 2
Los Angeles: 48 Plumas: 1 Santa Cruz: 16

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: 02/11/2026).