Calflora, a 501c3 non-profit
Distribution by County   8228    
Verbena bonariensis  L.
Purple top vervain,   Purpletop vervain
Verbena bonariensis is an annual or biennial herb that is not native to California.
There is a high risk of this plant becoming invasive in California according to Cal-IPC.
Record Count by County

Alameda: 6 Mariposa: 1 San Francisco: 5 Sutter: 1
Butte: 12 Merced: 7 San Joaquin: 3 Tehama: 1
Colusa: 1 Monterey: 3 San Mateo: 9 Trinity: 1
Contra Costa: 4 Napa: 1 Santa Barbara: 2 Tulare: 4
El Dorado: 3 Nevada: 1 Santa Clara: 6 Yolo: 5
Fresno: 1 Orange: 1 Santa Cruz: 10 Yuba: 9
Glenn: 7 Placer: 5 Shasta: 2
Los Angeles: 1 Sacramento: 33 Solano: 10
Marin: 20 San Diego: 1 Sonoma: 6

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: 11/23/2024).