The Arb is OPEN – and so is the Public Restroom!

Open to the public:  Wednesday through Sunday (CLOSED Monday and Tuesday)

Other than the restrooms, all other public buildings are CLOSED.  Please do not approach staff without a mask on.  Dogs are welcome but are required to be leashed at all times.    Please pick up after yourselves and your dogs.

Donations are requested:  $5 per person/$3 per dog.

Please read the information at the check-in area and follow the posted guidelines.

Have a question about a plant or tree?  Please contact or

All other questions can be sent to

Enjoy your visit!

At 7,150 feet in elevation, The Arboretum at Flagstaff is a unique destination with a unique mission, specializing in plants native to the Colorado Plateau and northern Arizona. The Arboretum is home to 750 species of plants in greenhouses, gardens, and natural habitats–located on 200 acres deep within the Coconino National Forest. Once the home of founder and philanthropist Frances McAllister, The Arboretum today houses horticultural collections and rare plant specimens nestled among historic buildings in a natural setting.

Virtual Pumpkin Carving Contest!

Arb Assisted Field Trips

The Arboretum at Flagstaff is excited to introduce parent led Arb Assisted Field Trips throughOctober 31st!  To participate, register your child(ren) here and our Education ProgramsManager will send a digital field trip packet of background information and at home activities related to the field trip and will set up a time with you to come to The Arboretum for your field trip experience. Once you arrive at The Arb, you will find a container with all of the materials you will need to lead a fun, successful field trip with your children.

Junior Naturalist Challenge!

The Arboretum at Flagstaff | Junior Naturalist Challenge is an innovative educational program designed for you and your child to engage directly with Leave No Trace Principles while adhering to social distancing guidelines in a safe, outdoor setting. 

New products added to our Bonfire Fundraiser!

It’s not too soon to start thinking about holiday gifts!  We have added additional products to our Bonfire Fundtraiser that feature the design drawn by The Arb Research Botanist Sheila Murray.  Tote bags, face masks, coffee mugs and a long sleeve t-shirt have been added to the collection.  A perfect gift for the plant lover in your life! 

The Arb receives a portion of the sale of each item in our Bonfire online store.

James Balog, Redbud tree in spring bloom, Maggie Valley, NC, April 2001. Photograph. ©2001 James Balog Photography/Earth Vision Institute. Courtesy of the artist.

Honoring Trees Online Exhibition

The Arboretum at Flagstaff is a proud co-sponsor of the Honoring Trees Online Exhibition!  Click here to visit this amazing exhibit!

Honoring Trees invites us to reflect on the splendor of trees, the challenges climate change and human stresses pose to trees, and our opportunity to respond with creativity and courage. The exhibition features work by 14 of today’s leading artists: James Balog, Edward Burtynsky, Judy Chicago, Jiyoung Chung, Nancy Cohen, Xavier Cortada, Dudley Edmondson, Lee Goodwin, Peter Handler, Claire Kelly, Maya Lin, Sheila Ransom, Alexis Rockman and Eric Serritella. An accompanying resource directory shows where you can help plant and care for trees and educate others about the importance of trees to our future. View the exhibition:

Honoring Trees An Online Art Exhibition Open Now FUTURE HONORING THE ® Creating Climate SmART Communities Honoring the Future, a nonprofit, harnesses the power of art to educate, empower and engage the public on climate change. We spark conversation, inspire action, and empower individuals, communities and businesses to create a climate smart world.

Donate to The Arb!

$2,404 of $10,000 raised

We have many projects, programs, gardens and initiatives worthy of support, some of these are Milkweed for Monarchs, the Penstemon Collection, our Mushroom Garden, Summer Camp Scholarships, Environmental Education, the Youth Climate Summit or simply donate to our greatest needs.  If there is a specific area of our organization that you would like to support, please note when you donate.

Your donations are critical to the success of The Arb!  Thank you for your continued support!

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Donation Total: $25.00

Reciprocal Access

The Arb members get free admission to any of the 330+ gardens listed on The AHS Website. It’s a great deal, since our memberships start at $40, while many gardens charge much more!
*This is not a membership to other gardens; only daily admission is reciprocal.

Join the Arb!

$ 40.00
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Donation Total: $40.00

By becoming a member of The Arb you help maintain and support our research center, educational and public programs and you receive excellent perks and discounts! Plus your membership may be tax-deductible!

Save a Tree!

Click the map image above to download your own map of The Arb 

Summer Camp

Cancelled for 2020

The Arboretum at Flagstaff has decided to cancel all EcoExplorer Summer Camps for the 2020 season due to concerns regarding the health of your children, the general public and our staff. 

Learn More

Upcoming Events!

Social distancing requirements have brought changes to our WALKS and CLASSES, as follows:

  • Registration 24 hours in advance is required — no walk-ins will be accepted
  • Class size is limited
  • Masks are required to participate

There are no upcoming events at this time

Host Your Event at the Arb!


Up to 250 guests can enjoy a beautiful natural setting with San Francisco Peaks as the backdrop. Ceremonies, receptions, and rehearsal dinners to make your day incredible.

Small Gatherings

The Arboretum offers your guests the beauty and tranquility of being surrounded by the Coconino National Forest, while still offering modern amenities for comfort. 

Meetings and Retreats

The Walter Reichardt House is the 1960s-era home of Arboretum founder Frances McAllister. It was renovated in 2007, and can now host groups of up to 40 people.

The Arboretum at Flagstaff

4001 S. Woody Mountain Rd. Flagstaff, AZ 86005

Visit the City of Flagstaff’s Leaf ‘o Meter to see the status of the fall leaf viewing in northern Arizona!