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Distribution by County   5407    
Melilotus officinalis  Lam.
Yellow sweetclover
Melilotus officinalis is an annual or biennial herb that is not native to California.
Record Count by County

Alameda: 7 Lake: 3 Placer: 24 Sierra: 3
Alpine: 11 Lassen: 9 Plumas: 10 Siskiyou: 2
Amador: 10 Los Angeles: 92 Riverside: 65 Solano: 4
Butte: 12 Madera: 2 Sacramento: 7 Sonoma: 11
Calaveras: 1 Marin: 3 San Benito: 13 Stanislaus: 3
Colusa: 8 Mariposa: 12 San Bernardino: 57 Tehama: 5
Contra Costa: 3 Mendocino: 9 San Diego: 17 Trinity: 18
Del Norte: 7 Merced: 15 San Francisco: 19 Tulare: 7
El Dorado: 43 Modoc: 8 San Joaquin: 2 Tuolumne: 9
Fresno: 15 Mono: 30 San Luis Obispo: 13 Ventura: 139
Glenn: 7 Monterey: 19 San Mateo: 14 Yolo: 4
Humboldt: 10 Napa: 2 Santa Barbara: 14
Inyo: 105 Nevada: 7 Santa Clara: 6
Kern: 16 Orange: 46 Shasta: 9

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: 03/15/2026).