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.

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]. 2022. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 11/27/2022).