The Saguaro cactus (Carnegiea gigantea) is a large cactus species that is native to Mexico and parts of Arizona and California. It is the largest cactus in the United States, commonly reaching 40 feet in height. The saguaro provides both food and shelter for a variety of desert species and plays an integral role in the culture of the Tohono O’odham people. The saguaro is a columnar cactus that grows notable branches, usually referred to as arms. Over 50 arms may grow on one plant, with one specimen having 78 arms. The fruits of the saguaro are an important food of American Indians, who also use the woody saguaro skeletons.
Here are the step-by-step instructions for growing and caring for a Saguaro cactus: