Saguaros are hardy columnar cacti that brave all seasons across a 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. Some grow to be over 12 meters (40 feet) tall. Saguaro National Park is home to over 2 million saguaro cacti living wild in Arizona.

However saguaros do need a perfect balance of heat and rainfall to thrive, and because of this their range is limited to specific areas within the Sonoran Desert in Arizona, the Mexican state of Sonora, as well as the Whipple Mountains and Imperial County areas of California.

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