Palmerella debilis subsp. serrata, with no common name widely recognized, is a perennial shrub. This subspecies is native to the chaparral and coastal sage scrub of southern California and northern Baja California. It is a relatively small shrub, typically reaching heights of 1-2 feet (0.3-0.6 meters) with a similar spread. Palmerella debilis subsp. serrata has a delicate appearance with small, serrated leaves and produces clusters of tubular, lavender to pale blue flowers that bloom in the late spring to early summer. The flowers are modest in size but can be quite showy when the plant is in full bloom, attracting pollinators such as bees and hummingbirds.

The plant is valued for its drought tolerance and ability to thrive in the challenging conditions of its native habitat, making it a suitable choice for xeriscaping and native plant gardens in similar climates. It is often used in restoration projects within its native range due to its adaptability to poor soils and its role in supporting local wildlife. In cultivation, it requires well-drained soils, minimal water once established, and full sun to part shade. While not commonly found in the nursery trade, it can be propagated from seed or cuttings. Potential problems include root rot if overwatered and susceptibility to pests when stressed.CC BY-SA 4.0