Euphorbia setiloba, commonly known as Yuma sandmat, is an annual herb native to desert washes and sandy flats in the southwestern United States and northern Mexico. It is a small, clumping plant with slender stems that typically grows to a height of 2-4 inches (5-10 cm). Yuma sandmat has tiny, hairy leaves and minute inflorescences that are not particularly showy, with the ovary of the female flower developing into a small, hairy, spherical fruit. The plant’s inconspicuous greenish flowers bloom in the spring and early summer.

Yuma sandmat is adapted to extreme desert conditions, requiring minimal water once established and thriving in well-drained, sandy soils. It is often used in xeriscaping and as a ground cover in desert gardens, where its drought tolerance and low stature make it a practical choice. While not widely cultivated, it can provide textural contrast in rock gardens or naturalized areas. It prefers full sun and can tolerate high temperatures and direct sunlight. Gardeners should be aware that Euphorbia setiloba, like other members of the Euphorbia genus, contains a milky sap that can be irritating to skin and eyes.CC BY-SA 4.0