The deciduous shrub reaches a maximum height and width of 10 feet, though can be maintained as a smaller shrub through pruning in the winter months. California wild rose's thorny thickets form secure shelter and nesting sites for birds and small mammals. The bright green, pinnately compound leaves showcase five to seven leaflets with toothed edges, providing an attractive backdrop for the large, showy flowers which emerge in spring and continue to bloom through early fall. The stunning blossoms, ranging from white to deep pink, measure two to three inches across and reveal a charming display of golden stamens within their delicate petals.

The open flowers of California wild rose provide nectar for insects and pollinators, including native bees and butterflies. The plant's extended blooming period from spring to fall ensures a consistent food source for these essential pollinating species. In late summer and early fall, the spent flowers give way to bright red rosehips, a valuable resource for wildlife during fall and winter when forage is scarce. Rosehips are edible and high in vitamin C, though contain many hard seeds, so are mainly used in teas and jam.