Fall Hours are in Effect:
The park is open daily from 8am. to 5pm., with the day's final admission at 4pm., one hour before closing time so the last-admitted guests of the day have a full hour to explore the gardens and trails.
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A variety of plants from the world's deserts await you at Boyce Thompson Arboretum State Park.
Boyce Thompson Arboretum State Park is the place to discover the intricate beauty and many faces of Arizona's oldest and largest botanical garden. Featured are plants from the world's deserts, towering trees, captivating cacti, sheer mountain cliffs, a streamside forest, panoramic vistas, many natural habitats with varied wildlife, a desert lake, a hidden canyon, specialty gardens and more.
The Arboretum was founded in the 1920s by mining magnate Col. William Boyce Thompson. In 1917 Col. Thompson served as co-leader of a Red Cross mercy mission to Russia, where he came to understand the importance of plants as the ultimate source of a large portion of mankind's food, clothing, and shelter. It was then, that he determined to use his great wealth to improve the use of plant resources. The Arboretum is one of his legacies.
Encompassing 323 acres, the Arboretum is Arizona's oldest and largest botanical garden. It was the first purely botanical institution in the inter-mountain states. The Arizona State Parks Board entered into agreement with the Boyce Thompson Arboretum Board and the University of Arizona in 1976 to cooperatively manage the Arboretum.
The University of Arizona also maintains a website for this park, with additional park information and photos. Learn more.
Download May Events Calendar ( 105 KB PDF)
May 28: Guided Butterfly Walk with ASU Professor Marceline VandeWater (next is June 25)
9am. Marceline VandeWater guides visitors to see, photograph and learn about colorful species ranging from Empress Leilia to Queen, Spring Azure and more. This relaxed and slow-moving walk that explores our Hummingbird-Butterfly Garden, Demonstration Garden and Children's Garden collections. ASU Professor Ron Rutowski and Laura Miller team-up again to guide the walk at 8:30am. June 25. Start time remains 8:30am. July 23 with Marceline VandeWater as guide, and also 8:30am. on August 27 with Adriane Grimaldi ; she's also our guide September 24 when the start time moves to 9am.
May 28: Geology walking tour with Rich Leveille
1:30pm. Learn about rocks and volcanic formations along our main trail on a guided tour with professional geologist Rich Leveille on May 28 starting at 8am. This tour compresses almost two billion years of geologic history into just over one educational hour! Learn about Pinal schist, the volcanic origins of Picket Post Mountain and the Apache Leap tuff. June 25 our guide is Scott McFadden, then July 23 Rich Leville returns.
- Alamo Lake
- Buckskin Mountain
- Cattail Cove
- Lake Havasu
- River Island
- Yuma Quartermaster Depot
- Yuma Territorial Prison
- Dead Horse Ranch
- Fort Verde
- Red Rock
- Riordan Mansion
- Slide Rock
- Verde River Greenway
- Boyce Thompson Arboretum
- Fool Hollow Lake
- Lost Dutchman
- Lyman Lake
- Tonto Natural Bridge