Senna polyantha, commonly known as Desert Senna, is an evergreen or semi-deciduous shrub native to arid and semi-arid regions of Mexico. It typically grows to a height and width of 3-4 feet (0.9-1.2 meters), with a rounded form and dense foliage. The leaves are pinnate with multiple leaflets, and the plant produces bright yellow, pea-like flowers in the summer, which are moderately showy and attract pollinators. Desert Senna is not particularly noted for its bark or fruit, but its flowers and foliage are the main ornamental features.

Desert Senna is valued for its drought tolerance and ability to thrive in hot, dry climates, making it an excellent choice for xeriscaping and water-wise gardens. It is often used in urban landscaping, as a border plant, or in naturalized areas where low maintenance and resilience to harsh conditions are desired. This shrub prefers full sun exposure and can adapt to a variety of soil types, provided they have good drainage. While it is generally easy to care for, it may require occasional pruning to maintain a neat appearance and to promote new growth. Desert Senna is not known to have significant disease or pest issues, but it should be monitored for common problems that can affect its health and appearance.CC BY-SA 4.0