California lilac
Not the color of denim exactly, the profuse springtime blossoms of 'Blue Jeans' are a rich lavender-purple. Erect evergreen shrub 6 ft. tall and wide with small shiny green leaves. Vigorous and fast growing. Best in full sun with little to no water once established. Tolerates heavy soils. Shrubby Ceanothus provide seeds eaten by bushtits, mockingbirds, quail and finches, as well as cover for birds.