Ceanothus integerrimus, also known as Deerbrush, is a woody shrub native to the western United States. It grows in a variety of environments, including chaparral and woodlands, and is most abundant in the California chaparral and woodlands and Sierra Nevada. The plant has been used by some Native American tribes to treat women after childbirth. All parts of the plant are rich in saponins, making it an effective and gentle soap for removing dirt. The plant is also important for forest regeneration after wildfires, providing nitrogen by creating nitrogen-rich patches in the soil through its root association with nitrogen-fixing bacteria. Deer, mule deer, porcupines, and quail feed on the plant, and it is also a good source of protein and calcium. The plant can be grown in warm, sunny positions and well-drained soils. The flowers can be used as a source of green dye and young, flexible shoots for basket weaving. The flowers are tiny, but in large clusters in late spring. They are usually pure white, but can be pale blue or pink colors.