Calflora, a 501c3 non-profit
Distribution by County   7658    
Solanum nigrum  L.
Black nightshade
Solanum nigrum is an annual herb that is not native to California.
Record Count by County

Alameda: 19 Lake: 1 Riverside: 14 Shasta: 1
Butte: 3 Los Angeles: 82 Sacramento: 14 Siskiyou: 4
Colusa: 2 Marin: 21 San Benito: 1 Solano: 10
Contra Costa: 10 Mariposa: 33 San Bernardino: 17 Sonoma: 14
El Dorado: 2 Mendocino: 4 San Diego: 78 Stanislaus: 1
Fresno: 4 Merced: 1 San Francisco: 28 Tehama: 4
Glenn: 3 Monterey: 16 San Luis Obispo: 15 Tulare: 3
Humboldt: 5 Napa: 6 San Mateo: 14 Ventura: 7
Inyo: 5 Nevada: 3 Santa Barbara: 15 Yolo: 10
Kern: 11 Orange: 27 Santa Clara: 9 Yuba: 2
Kings: 1 Placer: 2 Santa Cruz: 6

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: 01/20/2026).