Calflora, a 501c3 non-profit
Distribution by County   5259    
Lythrum hyssopifolium  L.

(not an active name)
Hyssop loosestrife
Lythrum hyssopifolium is an annual or perennial herb that is not native to California.
Cal-IPC rating: moderate
Record Count by County

Alameda: 56 Lake: 22 Plumas: 8 Shasta: 12
Amador: 7 Lassen: 3 Riverside: 86 Siskiyou: 1
Butte: 68 Los Angeles: 35 Sacramento: 162 Solano: 45
Calaveras: 17 Madera: 14 San Benito: 12 Sonoma: 122
Colusa: 12 Marin: 207 San Bernardino: 2 Stanislaus: 2
Contra Costa: 50 Mariposa: 17 San Diego: 306 Sutter: 9
Del Norte: 2 Mendocino: 132 San Francisco: 21 Tehama: 34
El Dorado: 28 Merced: 25 San Joaquin: 10 Trinity: 10
Fresno: 14 Monterey: 97 San Luis Obispo: 92 Tulare: 10
Glenn: 11 Napa: 37 San Mateo: 129 Tuolumne: 9
Humboldt: 41 Nevada: 8 Santa Barbara: 119 Ventura: 40
Kern: 5 Orange: 32 Santa Clara: 44 Yolo: 25
Kings: 1 Placer: 4 Santa Cruz: 46 Yuba: 15

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. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 06/19/2025).