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Carnegiea gigantea
Also called Saguaro Cactus, Giant cactus, Sage Of The Desert, Giant Saguaro
Saguaro is a huge columnar cactus of the Sonoran Desert that can reach over 12 m and live 150 to 200 years, growing slowly from seed. It needs full sun, very well drained soil and sparing water, and is cold sensitive.
The saguaro ( sə-(G)WAR-oh, Spanish: [saˈɣwaɾo]; Carnegiea gigantea) is a tree-like cactus species in the monotypic genus Carnegiea that can grow to be over 12 meters (40 feet) tall. It is native to the Sonoran Desert in Arizona, the Mexican state of Sonora, and the Whipple Mountains and Imperial County areas of California. Saguaro typically grow at elevations ranging from sea level to 4,500 feet (1,400 m), although they may be found at up to 5,000 feet (1,500 m). The saguaro blossom is the state wildflower of Arizona. Its scientific name is given in honor of Andrew Carnegie. In 1933, Saguaro National Park, near Tucson, Arizona, was designated to help protect this species and its habitat.
Saguaros have a relatively long lifespan, often exceeding 150 years. They may grow their first side arm around 75–100 years of age, but some never grow any arms.
The Saguaro is endemic to the Sonoran Desert and is found primarily in western Sonora in Mexico, and in western Arizona in the US. There are only 30 known wild saguaros found in southeastern California. Elevation is a limiting factor to its environment, as the saguaro is sensitive to extended frost or cold temperatures. No confirmed specimens of wild saguaros have been found anywhere in Nevada, New Mexico, Texas, Colorado, Utah, nor in the high deserts of northern Arizona. The northern limits of their range are the Hualapai Mountains in Arizona. They are the northernmost columnar cacti in the Americas. The range of the saguaro is strongly correlated with low minimum temperature stress and low minimum VPD.
Text excerpted from the Wikipedia article Saguaro by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
