Calflora, a 501c3 non-profit
Distribution by County   6416    
Phalaris aquatica  L.
Bulbous canarygrass,   Harding grass
Phalaris aquatica is a perennial grasslike herb that is not native to California.
Cal-IPC rating: moderate
Record Count by County

Alameda: 139 Lake: 26 Sacramento: 15 Solano: 51
Amador: 14 Los Angeles: 2576 San Benito: 21 Sonoma: 667
Butte: 9 Madera: 5 San Bernardino: 20 Stanislaus: 3
Calaveras: 7 Marin: 2503 San Diego: 39 Sutter: 4
Colusa: 14 Mariposa: 15 San Francisco: 20 Tehama: 12
Contra Costa: 223 Mendocino: 103 San Joaquin: 6 Trinity: 4
Del Norte: 2 Merced: 4 San Luis Obispo: 80 Tulare: 4
El Dorado: 17 Monterey: 111 San Mateo: 1027 Tuolumne: 8
Fresno: 16 Napa: 29 Santa Barbara: 121 Ventura: 363
Glenn: 5 Nevada: 7 Santa Clara: 288 Yolo: 13
Humboldt: 2099 Orange: 106 Santa Cruz: 444 Yuba: 6
Imperial: 3 Placer: 3 Shasta: 4
Kern: 3 Plumas: 2 Sierra: 1
Kings: 1 Riverside: 44 Siskiyou: 1

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: 01/16/2026).