Mentzelia decapetala, commonly known as tenpetal blazingstar, is an herbaceous biennial or short-lived perennial plant native to the Great Plains and rocky outcrops in the western United States and Canada. It typically grows to a height of 1-3 feet (0.3-0.9 meters) and spreads 1-2 feet (0.3-0.6 meters) wide. The tenpetal blazingstar is characterized by its large, showy white flowers that bloom at night and can be up to 3 inches (7.6 cm) in diameter, providing a striking display in arid landscapes during its flowering season in late summer.

The plant is well-suited for xeriscaping due to its drought tolerance and preference for well-drained soils, including those of poor quality. It is an excellent choice for rock gardens, naturalized areas, and borders in dry climates. Tenpetal blazingstar is also valuable for attracting night-pollinating insects such as moths. While it thrives in full sun and requires minimal maintenance once established, it can be susceptible to root rot if overwatered. There are no widely known cultivars of this species, and it is not typically associated with aggressive roots or invasiveness.CC BY-SA 4.0