Over the last five years, researchers have found that the death rate for saguaros in the Phoenix area jumped from 1% to 2% every year, and is now closer to 7% ...

Fires accelerated by climate change, along with invasive plants and urban sprawl, threaten the saguaros, a keystone species of the Sonoran Desert and a celebrated symbol of the Southwest.

“Obviously you can’t just go out into the desert and take them out,” he said. Cactus skeletons aren't protected under the Arizona native plant law, but the Arizona Department of Agriculture ...

The Crested Saguaro Society began searching the approximately 100,000-square-mile desert for crested saguaros — the largest cactus in the U.S., often growing over 40 feet tall and adorned with a ...

As the transplanted cacti take root in this hotter, drier Sonoran Desert, the people who put them in the ground watch carefully—documenting every step, photographing these sites as they recover.

The saguaro cactus is synonymous with the Sonoran Desert, the region where it grows best. The slow-growing species is hardy and, despite longtime rumors of disease, resistant to blight.

A giant desert cactus that lived for an estimated 200 years has toppled over as a result of heavy rain in Arizona. The cacti's trunk shattered after recent heavy rainfall in the region The ...