Ceanothus crassifolius, commonly known as hoaryleaf ceanothus, is an evergreen shrub native to the chaparral and coastal sage scrub of California and Baja California. It is well-adapted to dry, rocky slopes and canyons within these ecosystems. The shrub typically grows to a height of up to 10 feet with a similar spread, featuring small, leathery leaves that have a distinctive hoary texture due to fine hairs. From late winter to early spring, it produces dense clusters of tiny, fragrant white flowers that are highly attractive to pollinators such as bees and butterflies.

Hoaryleaf ceanothus is valued for its drought tolerance and ability to stabilize slopes, making it an excellent choice for erosion control in xeriscaping. It is also used in habitat restoration projects and as an ornamental in native plant gardens. This shrub thrives in full sun to partial shade and prefers well-drained soils. While it is generally low-maintenance, it can suffer from root rot if overwatered. It is also susceptible to fungal diseases in humid conditions. Hoaryleaf ceanothus does not transplant well due to its deep root system, so it is best to plant it in its permanent location from the start.CC BY-SA 4.0