Calflora, a 501c3 non-profit
Distribution by County   12168    
Achillea millefolium  L.  var. borealis  (Bong.) Farw.

(not an active name)
Boreal yarrow
Achillea millefolium var. borealis is a perennial herb that is not native to California.
also called Achillea millefolium
Record Count by County

Alameda: 136 Lake: 30 Plumas: 188 Siskiyou: 80
Alpine: 41 Lassen: 185 Riverside: 56 Solano: 108
Amador: 17 Los Angeles: 192 Sacramento: 16 Sonoma: 299
Butte: 70 Madera: 21 San Benito: 238 Stanislaus: 16
Calaveras: 21 Marin: 721 San Bernardino: 102 Sutter: 11
Colusa: 19 Mariposa: 90 San Diego: 239 Tehama: 64
Contra Costa: 138 Mendocino: 136 San Francisco: 189 Trinity: 62
Del Norte: 12 Merced: 6 San Joaquin: 3 Tulare: 142
El Dorado: 129 Modoc: 186 San Luis Obispo: 191 Tuolumne: 56
Fresno: 152 Mono: 164 San Mateo: 474 Ventura: 125
Glenn: 6 Monterey: 227 Santa Barbara: 196 Yolo: 13
Humboldt: 113 Napa: 66 Santa Clara: 254 Yuba: 8
Inyo: 47 Nevada: 128 Santa Cruz: 125
Kern: 127 Orange: 80 Shasta: 75
Kings: 3 Placer: 133 Sierra: 91

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: 12/22/2024).