Purshia glandulosa, commonly known as Desert Bitterbrush, is an evergreen shrub native to arid and semi-arid regions, including the Great Basin and Mojave, Sonoran, and Chihuahuan deserts. It is well-adapted to open woodlands, sagebrush steppe, and pinyon-juniper woodlands. Typically, it grows up to 4.5 meters (15 ft) tall, but environmental conditions such as soil quality and water availability may limit its size. Desert Bitterbrush has a deep taproot, sometimes extending nearly 5 meters (16 ft) into the soil, which allows it to access deep water reserves during periods of drought. This shrub is capable of nitrogen fixation through root nodules, contributing to soil fertility. Its flowers are small, white, and appear from February through June, depending on the variety, with a modest display that attracts pollinators. It reproduces by seed, layering, and resprouting from its root crown, and can regenerate from root fragments buried deep in the soil.

Desert Bitterbrush is valued for its drought tolerance and ability to thrive in poor soils, making it a suitable choice for xeriscaping and restoration projects. It provides habitat and food for wildlife, including seeds for birds and foliage for browsing animals. In cultivation, it requires full sun to part shade, minimal water once established, and well-drained soils. While not commonly used in ornamental horticulture, it can serve as a low-maintenance natural hedge or erosion control plant on slopes. Gardeners should be aware that it can spread if conditions are favorable, and it may require pruning to maintain a desired shape or size.CC BY-SA 4.0