Ruellia peninsularis, commonly known as Desert Ruellia, is a semi-deciduous shrub native to the desert regions of Baja California and the Sonoran Desert. It typically grows to a height of 3-4 feet (0.9-1.2 meters) and a width of 2-3 feet (0.6-0.9 meters). This shrub is characterized by its narrow, dark green leaves and trumpet-shaped purple flowers that bloom in the late summer to fall, adding a splash of color to the landscape. The flowers are particularly attractive to hummingbirds and butterflies, making it a beneficial plant for pollinator gardens.

Desert Ruellia is valued for its drought tolerance and low maintenance requirements, making it an excellent choice for xeriscaping and water-wise gardens. It thrives in full sun and requires minimal water once established, preferring well-drained soils. While it is not typically used for culinary or medicinal purposes, it serves as an attractive ornamental plant for rock gardens, desert landscapes, and as a border plant. Gardeners should be aware that it can spread readily by self-seeding and may require management to prevent unwanted naturalization.CC BY-SA 4.0