The Cholla Cactus Garden, located about 12 miles south of the park's North Entrance, is home to one of the few stands of cholla cactus in the park. The short, quarter-mile Cholla Cactus Garden Nature ...

Southerners may have their lush, shiny-green-leafed holly trees, bedecked with cardinal-red berries, and easterners their twiggy, red-fruited winterberry bushes, but we here in the Southwest have our ...

Multiple stages of cactus bugs on tree cholla cacti. Most insects in this photo are juveniles. There is one adult on the cactus fruit (top right) and one newly eclosed (pale) adult at the lower left.