Ceanothus maritimus, commonly known as Maritime Ceanothus, is an evergreen shrub native to the coastal sage scrub and chaparral of central California, particularly in the maritime influence zones. It is a low-growing, spreading or ascending shrub typically under 3 feet (1 meter) in height with reddish-gray bark that matures to a more uniform gray. The firm, evergreen leaves are oppositely arranged, each oval or oblong in shape with a pointed, flat, or notched tip, measuring under 0.8 inches (2 centimeters) long. They are shiny green on the upper surface and woolly underneath, with edges that curl under and are sometimes toothed. The inflorescence is a small cluster of deep blue to off-white flowers, blooming from late winter to early spring, which are highly attractive to bees and butterflies. The fruit is a rounded capsule about 0.24 inches (6 millimeters) long with tiny horns on top.

Maritime Ceanothus is valued for its drought tolerance, low maintenance requirements, and the ability to attract pollinators. It is often used in native plant gardens, xeriscaping, and as a ground cover or low hedge in coastal areas. It thrives in full sun but can tolerate partial shade, and prefers well-drained soils. While it is adapted to low-water conditions, occasional deep watering during dry periods can help maintain its vigor. It is important to avoid overwatering, as this can lead to root rot. Maritime Ceanothus is also appreciated for its resistance to pests and diseases, although it can be susceptible to fungal problems in poorly drained soils.CC BY-SA 4.0