Calflora, a 501c3 non-profit
Distribution by County   5738    
Myriophyllum spicatum  L.
American milfoil,   Eurasian milfoil,   Spike watermilfoil,   Water milfoil
Myriophyllum spicatum is a perennial herb that is not native to California.
Cal-IPC rating: high
Record Count by County

Alameda: 10 Lassen: 3 Plumas: 1 Shasta: 7
Amador: 1 Los Angeles: 3 Riverside: 5 Siskiyou: 2
Butte: 31 Madera: 3 Sacramento: 24 Solano: 8
Calaveras: 2 Marin: 12 San Bernardino: 18 Sonoma: 1
Colusa: 1 Mariposa: 5 San Diego: 10 Sutter: 2
Contra Costa: 6 Mendocino: 1 San Francisco: 4 Tehama: 3
El Dorado: 330 Merced: 4 San Joaquin: 11 Trinity: 1
Fresno: 3 Napa: 7 San Luis Obispo: 14 Tuolumne: 4
Glenn: 4 Nevada: 20 San Mateo: 7 Yolo: 13
Imperial: 15 Orange: 4 Santa Barbara: 1 Yuba: 10
Lake: 4 Placer: 46 Santa Clara: 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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/23/2024).