The largest known Saguaro at Saguaro National Monument in southern Arizona is this huge specimen which grows near the Madrona Ranger Station. It is over 50 feet high and has 52 arms. Its weight is estimated to be 14 tons!
From Kodachrome original by Hubert Lowman
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Here is one more example of a Saguaro
Saguaros attain many fantastic shapes during their long reign of life.
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The saguaro is a large, tree-sized cactus species in the monotypic genus Carnegiea, which can grow to be over 20 meter (~70 ft) tall. It is native to the Sonoran Desert in the U.S. state of Arizona, the Mexican state of Sonora, and some areas of California. Some specimens may live for more than 150 years.