The
saguaro is a large, tree-sized cactus species in the monotypic genus
Carnegiea. It is native to the Sonoran Desert in the U.S. state of Arizona, the Mexican state of Sonora, and an extremely small area of California, U.S. The saguaro blossom is the state flower of Arizona. The common name
saguaro came into the English language through the Spanish language, originating in the language of the Tohono O'odham Native American nation. Saguaros have a relatively long life span. They take up to 75 years to develop a side arm. The arms themselves are grown to increase the plant's reproductive capacity (more apices equal more flowers and fruit). The growth rate of saguaros is strongly dependent on precipitation; saguaros in drier western Arizona grow only half as fast as those in and around Tucson, Arizona. Some specimens may live for more than 150 years; the
Champion Saguaro grows in Maricopa County, Arizona and is 13.8 meters (45.3 ft) tall with a girth of 3.1 meters (10 ft). They are also slow to propagate.
