Calflora, a 501c3 non-profit
Distribution by County   5370    
Marrubium vulgare  L.
White horehound
Marrubium vulgare is a perennial herb that is not native to California.
Cal-IPC rating: limited
Record Count by County

Alameda: 74 Lake: 10 Placer: 18 Shasta: 27
Alpine: 1 Lassen: 9 Plumas: 13 Sierra: 1
Amador: 5 Los Angeles: 4025 Riverside: 219 Siskiyou: 82
Butte: 65 Madera: 33 Sacramento: 52 Solano: 24
Calaveras: 5 Marin: 47 San Benito: 159 Sonoma: 28
Colusa: 8 Mariposa: 47 San Bernardino: 126 Stanislaus: 19
Contra Costa: 51 Mendocino: 13 San Diego: 491 Sutter: 12
El Dorado: 17 Merced: 26 San Francisco: 1 Tehama: 17
Fresno: 124 Modoc: 7 San Joaquin: 16 Trinity: 3
Glenn: 3 Mono: 12 San Luis Obispo: 110 Tulare: 29
Humboldt: 20 Monterey: 152 San Mateo: 31 Tuolumne: 5
Inyo: 29 Napa: 16 Santa Barbara: 195 Ventura: 281
Kern: 268 Nevada: 14 Santa Clara: 100 Yolo: 23
Kings: 7 Orange: 1117 Santa Cruz: 37 Yuba: 14

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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/21/2024).