Holacantha emoryi, commonly known as Crucifixion Thorn, is a deciduous shrub native to the Sonoran and Mojave Deserts, specifically in areas of California, Arizona, and Northwest Mexico. It is well-adapted to arid environments, often found in desert washes, rocky hillsides, and scrublands. This plant typically grows to a height of 3-15 feet (0.9-4.6 meters) and a width of 3-12 feet (0.9-3.7 meters), featuring a spiny, intricately branched structure that provides habitat and protection for desert wildlife.

Crucifixion Thorn is notable for its drought tolerance and its ability to thrive in extreme heat and poor soils, making it a valuable plant for xeriscaping and desert gardens. It produces inconspicuous yellow-green flowers in the spring, summer, and fall that are followed by small, dry fruits. The plant’s stark form and resilience to harsh conditions make it a striking feature in cultivation. It requires minimal maintenance, needing full sun exposure and well-drained soils. Overwatering should be avoided to prevent root rot. While it is not commonly afflicted by diseases, its sharp thorns can make handling and pruning a challenge.CC BY-SA 4.0