Calflora, a 501c3 non-profit
Distribution by County   4364    
Isatis tinctoria  L.
Dyer's woad,   Dyers woad
Isatis tinctoria is a biennial or perennial herb that is not native to California.
Cal-IPC rating: moderate
Record Count by County

Alameda: 1 Glenn: 17 Napa: 2 Siskiyou: 475
Amador: 3 Humboldt: 31 Nevada: 9 Tehama: 14
Butte: 8 Lake: 3 Placer: 15 Trinity: 163
Calaveras: 2 Lassen: 64 Plumas: 24 Tuolumne: 9
Colusa: 3 Marin: 3 Sacramento: 2 Yuba: 1
Del Norte: 15 Mendocino: 19 Shasta: 50
El Dorado: 7 Modoc: 371 Sierra: 9

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).