Calflora, a 501c3 non-profit
Distribution by County   161    
Ailanthus altissima  (Mill.) Swingle
Ailanthus,   Tree of heaven
Ailanthus altissima is a tree that is not native to California.
Cal-IPC rating: moderate
Record Count by County

Alameda: 39 Lassen: 5 Riverside: 64 Solano: 137
Amador: 570 Los Angeles: 657 Sacramento: 125 Sonoma: 55
Butte: 1089 Madera: 13 San Benito: 16 Stanislaus: 68
Calaveras: 88 Marin: 56 San Bernardino: 357 Sutter: 46
Colusa: 71 Mariposa: 73 San Diego: 141 Tehama: 61
Contra Costa: 50 Mendocino: 21 San Joaquin: 168 Trinity: 85
El Dorado: 46 Merced: 47 San Luis Obispo: 160 Tulare: 76
Fresno: 37 Mono: 2 San Mateo: 45 Tuolumne: 32
Glenn: 21 Monterey: 52 Santa Barbara: 21 Ventura: 55
Humboldt: 31 Napa: 32 Santa Clara: 88 Yolo: 37
Inyo: 53 Nevada: 30 Santa Cruz: 10 Yuba: 30
Kern: 112 Orange: 153 Shasta: 321
Kings: 10 Placer: 38 Sierra: 3
Lake: 26 Plumas: 18 Siskiyou: 55

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: 11/21/2024).