Boyce Thompson Arboretum’s newest garden, the Wallace Desert Garden, offers expansive views, creekside trails, and hundreds of plants brand-new to BTA!
At 13 acres and with more than 5,000 new plantings, the addition of the Wallace collection moves Boyce Thompson Arboretum into the top tier of botanical gardens around the world. The main trail is wheelchair accessible.
The Story
In 2014, the Arboretum was approached with a unique offer. Would BTA accept a donation of an entire garden’s worth of plants collected by Henry B. Wallace—the Wallace Desert Gardens collection? H.B. had filled his garden with an international palette of arid land plants—a stunning array of thousands of mature trees, shrubs, cacti and succulents. He had passed away in 2005 and his foundation was no longer able to maintain the valuable collection in Scottsdale, but they wanted to keep the collection together. At BTA the plants would get the same amount of rain as at the Scottsdale location and would have the same dew point and elevation.
Not only did BTA need to design a new garden, it had to transplant 5,870 plants. Beginning in December 2015, most of H.B.’s collection was moved 75 miles from north Scottsdale to BTA—by truck, car and semi. Logan Simpson Architects, Native Resources International, the Wallace Desert Gardens Board and staff, and Boyce Thompson Arboretum all collaborated to bring the mammoth endeavor to completion. The team developed and designed a 13-acre garden with 1.5 miles of new trails, and a bridge over Queen Creek.
Experience the Garden
Perfectly situated next to Queen Creek, the Wallace Desert Garden expertly exhibits H.B. Wallace’s collection by region. From the Yucca Forest to the Baja Loop, you’ll see plants arrayed in a natural setting along winding trails. Of the 1,223 taxa (species, cultivars, hybrids, varieties) in the garden, 861 are new to Boyce Thompson Arboretum, and 62 species are considered to be rare or endangered.
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New here? Let us show you around.
Welcome to Boyce Thompson Arboretum—Arizona’s oldest and largest botanical garden.
Explore winding trails, desert blooms, and 343 acres of living beauty just outside Phoenix.
Come curious. Leave inspired.
Calling all teachers! Boyce Thompson Arboretum invites you to join us for our professional development sessions. Come spend time with us as we familiarize ourselves with the 5E Instructional Model and explore desert plant adaptations! Pre-registration is required. Space is limited. Visit https://btarboretum.org/pd/to apply.
✨Summer Golf Cart Tours ✨
Explore the arboretum this summer with our staff on a golf cart tour! We invite you to join us for an hour long cart ride to some of our most scenic spots of the arboretum. Our knowledgeable staff will give you insights into our collections and take you to the best photo ops the gardens have to offer.
Wednesdays-Saturdays in June, July, August between 7:00am-8:00am, 9:00am-10:00am, 11:00am-12:00pm
Cost: $20 per person, plus the cost of admission.
Cart tours are first come first served with a limit of 5 guests. Ask about availability at our Visitor’s Center Wednesday through Saturdays this summer!
Some exclusions apply
Make the most of your mornings this summer! From June through August, Boyce Thompson Arboretum is open Wednesday through Monday, 6:00 a.m. to 12:00 p.m., with last admission at 11:00 a.m. We are closed on Tuesdays.
Plus during these months enjoy special admission rates:
Ages 13 and up – $16
Children 5–12 – $10
Children under 5 – Free
Visit early, explore the trails, and soak in the beauty of the Arboretum in the cooler part of the day.
Tiny cuttings, big impact.
Every plant you see here started from just a snip — carefully cleaned, dipped, and rooted with care. Propagation isn’t just practical. It’s powerful. It helps us grow more plants for pollinators, restoration, and education — all while conserving precious resources.
But we can’t do it alone. Your support helps us expand our propagation efforts and grow the future of this garden.
Think you`re seeing bark? Look again. You might be spotting the Ornate Tree Lizard. But once you see it...you can`t unsee it.
If you grew up in the Southwest, this flower might be part of your childhood. The Desert Willow is back in bloom in the garden and just as magical as you remember.
We`ll be closed on Tuesday, May 20th, but we`ll be back and ready to welcome you on Wednesday, May 21st, from 6 AM to 5 PM. See you then!