Last October, National Park Service ecologist Andy Hubbard hiked into an empty canyon on the east side of Saguaro ... Verde Creek, near the park boundary at the east edge of Tucson, recorded ...

Saguaro No. 322 was just two inches tall when it was first spotted growing in the shade of a palo verde tree near ... Tucson Mountain District. (Congress elevated the monument to national park ...

as well as more than 5,000 saguaro cacti. Inside, the park shelters 5,500 acres of canyons, streams, and hiking and biking trails that wind through the Coronado National Forest at elevations near ...

Arizona’s Saguaro National Park takes its name from the largest cacti in the United States. The park, which flanks Tucson, is home to millions of the cacti, which can grow up to 50 feet tall.