Our Mission Statement
"The Mission of Boyce Thompson Arboretum is to instill in people an appreciation of plants through the fostering of educational, recreational, research, and conservation opportunities associated with arid-land plants."
Recorded information (hours, directions, events, etc): 520.689.2811
Business Office Phone: 520.689.2723
Or write to:
Boyce Thompson Arboretum
37615 U.S. Highway 60
Superior, AZ 85173
Our staff list is at the end of this page if you need an email address to contact Arboretum Director Mark Siegwarth, Business Manager Patti Baynham, Membership Services Lorrie Polley, or other staff.
Our mission as stated above is "to instill in people an appreciation
of plants through the fostering of educational, recreational, research and
conservation opportunities associated with arid land plants." Every day
our visitors help us achieve this by walking our trails, enjoying the collections,
and reading about the thousands of plants that surround you while you are
The arboretum is located near milepost #223 on US Highway 60, a one-hour drive due east of Phoenix or about 90 minutes from the North side of Tucson via Oracle Road to highway 79 North past Florence to the crossroads with highway 60 -- then another 12 miles East on highway 60.
N 33.28094*,W 111.16135* US-AZ mapcode MC3.WC4
ADMISSION is $10 for adults and $5 for ages 5-12,
and free to children younger than age 5.
HOURS during Summer months of May, June, July, August and September are 6:00 a.m. to 3:00 p.m. daily, with the day's last admission accepted and last visitors admitted at 2:00 p.m. so they have an hour to enjoy the trails. From October 1 though the end of April admission is taken daily from 8:00 a.m. until 4:00 p.m., then the Arboretum closes promptly at 5:00 p.m. PLEASE NOTE THAT AS OF 7/15/14, SUMMER HOURS HAVE BEEN EXTENDED TO INCLUDE SEPTEMBER.
PICNIC tables and grills are available for visitors to use.
PETS are welcome - provided they remain leashed at all times and are well-behaved. Visit our
"LINKS" page for details about camping, motels, restaurants and nearby amenities.
As you approach the Arboretum on Highway 60 you'll see towering Picketpost Mountain dominating the southern horizon. The Arboretum brings together plants from the Earth's many and varied deserts and dry lands and displays them alongside unspoiled examples of the native Sonoran Desert vegetation. No matter what the season, you will enjoy a moving and memorable experience of the beauty, majesty, and mystery of arid land plants. You will also enjoy the many natural communities that form the arid land environment. Memorable experiences await you as you walk the Main Trail; you will see enthralling, otherworldly shapes and forms in the Cactus Garden. You will also find peaceful reflection in the cool shade of towering trees in Queen Creek Canyon; and intellectual stimulation in the many and varied displays at the Smith Interpretive Center. You may enjoy a quiet and intimate time at the Wing Memorial Garden; as well as inspiration for home or business landscapes at the Demonstration Gardens of Low Water-demanding Plants. You will see expansive southwestern vistas visible from the High Trail. There are many gardens here; so find your special places among them.
An important function in the Arboretum's mission is its commitment to education.
This is truly a 320-acre living classroom. New projects are underway for both
the arboretum and this website, so visit often -- both online and in person.
STAFF CONTACTS (note: to thwart address harvesting by junk mailers, each email below lacks the "@." To make any address below valid simply replace the word AT with @ and delete the spaces between the person's name and the address string)
Director Mark Siegwarth <msiegwar AT cals.arizona.edu>
Gift Shop and Plant Nursery Director Lynnea Spencer <spencer AT Ag.arizona.edu>
Business Manager Patti Baynham<pbaynham AT cals.arizona.edu>
Director of Horticulture Cathy Babcock<cbabcock AT cals.arizona.edu>
Advertising, Marketing and Public Relations? Kim Stone <kstone AT Ag.arizona.edu>
Membership Coordinator Lorrie Polley <members AT ag.arizona.edu>
Education Program and School Tours Lacey Pacheco <lpacheco AT Ag.arizona.edu>
Volunteer Program Coordinator <BTAinfo AT Ag.arizona.edu>