The Arboretum at Flagstaff, Arizona

What is The Arboretum at Flagstaff?

The arboretum showcases plants of the Colorado Plateau, the high-desert region that takes in both the Grand Canyon and Zion. Most of its 750 species are native or suited to dry conditions. It is especially known for a large regional collection of penstemons, a group of flowering plants that thrive in the West.

Science happens here too. The grounds host a research station named for Merriam and Powell, along with the Southwest Experimental Garden Array, which support study of the region's plants. Visitors see a garden; researchers see an outdoor laboratory.

History of The Arboretum at Flagstaff

Before it became a garden, the land was forest and a working ranch. Frances McAllister lived here in the late 1960s. In 1981 she gave the property and set up the endowment that funds the arboretum, turning her ranch into a place where the public can learn about the plants of northern Arizona.

Visiting The Arboretum at Flagstaff: tips

The arboretum is at 4001 South Woody Mountain Road, about 3 miles off Route 66. Restrooms are on site, it is listed as wheelchair accessible, and it is marked as good for kids. Remember the altitude: walk at an easy pace and bring water. Allow one to two hours, longer if you enjoy lingering over labels and blooms.

The Naval Observatory's Flagstaff Station is about 1.7 miles away and Braeside Observatory about 2.4 miles, though neither is described as open to visitors. The Riordan Mansion is about 4.6 miles off, back toward town.