Located in Southern Arizona, near the border with Mexico, this area is the only place where you can experience organ pipe cactus in the Sonoran Desert. A 20 mile loop road takes you to some very nice stands of organ pipe and saguaro cactus along with other plants that grow in this region. Nearby mountains create a magnificent backdrop. The organ pipe grow well here because of a very mild climate Winter months are mild with very hot temps in the spring and summer months. December is a great time to visit.