The Grand Canyon, carved by the mighty Colorado River, is 277 miles (446 km) long, up to 1 mile (1.6 km) deep, and up to 15 miles (24 km) wide. Millions of years of erosion have exposed the multicolored layers of the Colorado Plateau in me... Read more >

Mesa Community College Arboretum is located in Mesa, AZ.

ArbNet Accredited Arboretum – Level II... Read more >

This portion of the Chinle Formation has a large concentration of 225-million-year-old petrified wood. The surrounding Painted Desert features eroded cliffs of red-hued volcanic rock called bentonite. Dinosaur fossils and over 350 Native A... Read more >

Split into the separate Rincon Mountain and Tucson Mountaindistricts, this park is evidence that the dry Sonoran Desert is still home to a great variety of life spanning six biotic communities. Beyond the namesake giant saguaro cacti, ther... Read more >

The Arboretum At Flagstaff is located in Flagstaff, AZ.

The Arboretum at Flagstaff is a non-profit demonstration garden in Flagstaff Arizona.

ArbNet Accredited Arboretum – Level I... Read more >