Which desert is the only desert in the world where the "Saguaro" cactus grows indigenously?

The Sonoran Desert is the only desert in the world where the saguaro cactus grows indigenously because it provides the perfect conditions for their growth. With its hot and arid climate, along with a unique combination of well-drained sandy soils and reliable rainfall patterns, the Sonoran Desert offers the ideal environment for saguaro cacti to thrive. This region's specific combination of temperature, precipitation, and soil conditions enables the saguaro cactus to adapt and flourish, making it exclusive to the Sonoran Desert.