1. A shrub of the genus Ceanothus, native to western North America, having small white or blue flowers and used for erosion control and wildlife habitat.
Usage: regional; also called California lilac or wild lilac

Examples

• The hillside was covered with buckbrush, its delicate white flowers blooming in spring.
• Buckbrush is commonly planted in California gardens to attract native bees and butterflies.
• The dense buckbrush thicket provided shelter for quail and other wildlife.
• After the fire, buckbrush was one of the first plants to regenerate on the burned slopes.