Calflora, a 501c3 non-profit
Distribution by County   7153    
Ricinus communis  L.
Castor bean,   Castorbean
Ricinus communis is a shrub that is not native to California.
Cal-IPC rating: limited
Record Count by County

Alameda: 17 Marin: 1 San Diego: 1557 Solano: 2
Butte: 5 Monterey: 8 San Francisco: 1 Stanislaus: 1
Contra Costa: 18 Napa: 2 San Joaquin: 2 Sutter: 2
Fresno: 3 Orange: 2544 San Luis Obispo: 58 Tulare: 8
Imperial: 1 Riverside: 111 San Mateo: 6 Ventura: 350
Kern: 4 Sacramento: 1 Santa Barbara: 123 Yolo: 4
Los Angeles: 2260 San Benito: 2 Santa Clara: 23
Madera: 1 San Bernardino: 67 Santa Cruz: 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. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 01/16/2025).