Calflora, a 501c3 non-profit
Distribution by County   35    
Acacia mearnsii  De Wild.
Black wattle
Acacia mearnsii is a tree or shrub that is not native to California.
Record Count by County

Alameda: 8 Orange: 4 San Mateo: 2 Sonoma: 1
Butte: 1 San Diego: 8 Santa Barbara: 3
Humboldt: 1 San Francisco: 5 Santa Clara: 1
Los Angeles: 8 San Luis Obispo: 1 Santa Cruz: 3

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]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 12/12/2025).