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Distribution by County   271    
Amaranthus albus  L.
Pigweed amaranth, Tumbleweed
Amaranthus albus is an annual herb that is not native to California.
Record Count by County

Alameda: 13 Lassen: 5 Plumas: 2 Sierra: 1
Amador: 2 Los Angeles: 149 Riverside: 86 Siskiyou: 3
Butte: 77 Madera: 6 Sacramento: 18 Solano: 6
Calaveras: 7 Marin: 7 San Benito: 7 Sonoma: 3
Colusa: 3 Mariposa: 78 San Bernardino: 66 Stanislaus: 8
Contra Costa: 12 Mendocino: 4 San Diego: 199 Sutter: 11
El Dorado: 13 Merced: 12 San Francisco: 4 Tehama: 22
Fresno: 18 Modoc: 4 San Joaquin: 7 Trinity: 2
Glenn: 13 Mono: 8 San Luis Obispo: 56 Tulare: 8
Humboldt: 2 Monterey: 20 San Mateo: 10 Tuolumne: 12
Imperial: 8 Napa: 13 Santa Barbara: 53 Ventura: 51
Inyo: 10 Nevada: 7 Santa Clara: 12 Yolo: 10
Kern: 45 Orange: 59 Santa Cruz: 3 Yuba: 5
Lake: 1 Placer: 3 Shasta: 2

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: 03/12/2026).