Visitors may experience traffic delays as CALTRANS begins work on Highway 18. Work is scheduled Mondays – Fridays from 7 a.m. to 3 p.m., and involves closing one lane of traffic in each direction. The completion date is expected to be spring of 2024. Please check weather conditions before driving up the mountain. Click on the snowflake button to view National Weather Service info for our area.

Adventure Passes are not required by the National Forest Service on Monday, February 20, 2023, for Presidents Day. Hope to see you at the Arboretum!

Hours & Events

Because of the wildlife in and around the Arboretum, it's potentially unsafe to visit the site and especially to hike the Sequoia Trail after dark. During daylight hours, that's not an issue.

The booth is open from 11 AM - 3 PM Saturdays and Sundays. We accept cash and Visa or Mastercard, but please note that the minimum credit or debit purchase is $10.

Enjoy our fall newsletter for even more updates!

Our Spring Newsletter will be out in February.

Adventure Passes

An Adventure Pass or other valid pass (such as America the Beautiful) is required to park in the Arboretum’s lot–whether or not the Information Booth is open. As always, entrance to the Arboretum itself is free.

Paying for an Adventure Pass helps our National Forests. The majority of the fees are used for operating, maintaining and improving recreational opportunities for our visitors.

If our information booth isn’t open, you may purchase an Adventure Pass at:

  • The 7-11 in Lake Arrowhead, CA 
  • The Lake Arrowhead Chamber of Commerce in Lake Arrowhead Village, Lake Arrowhead, CA
  • Lake Drive Hardware in Crestline, CA
  • The 7-11 in Crestline, CA
  • Jensen’s Market, Running Springs, CA

Getting Here

We're in San Bernardino National Forest between Lake Arrowhead and Running Springs. The main routes leading to Heaps Peak Arboretum are Highways 18 and 330. (Caltrans highway info: 800.427.7623.)

29358 Rim of the World Hwy. 18
Skyforest, CA 92385
Directions & Parking

Semi-Annual Native Plant Sale

Our next  Native Plant Sale will be held in the spring of 2023. Last fall, nearly 200 enthusiasts visited us that morning to take advantage of an excellent native-plant selection and support the Arboretum. Plants are generally priced from $5 to $20, and the proceeds benefit the Arboretum. We will post the date for the sale as soon as it’s decided.

Explore the Forest

This family- and dog-friendly trail is nearly one mile long. Descending and then rising gently, it’s an easy hike with numbered signposts along the way. An information-rich trail guide, keyed to those numeric posts, makes your hike even more interesting and educational.

Photo: Anneke Fischle

The Arboretum’s gardens display a wide variety of flowers, shrubs and other plants. Largely native to the San Bernardino Mountains, many of them are identified by easy-to-read signs. The nearby Information Booth offers print and visual aids to help you learn even more!

Find excellent information about our native plants and animals at…

On the blog...


Through habitat restoration, trail maintenance and other efforts, we’re working to protect and conserve our area’s expanse of the National Forest.


Heaps Peak Arboretum has a diverse collection of mostly native trees, shrubs, wildflowers and other plants. Some of them might do well in your garden. Learn more at the Arboretum!

about us

Rim of the World Interpretive Association

Rim of the World Interpretive Association (ROWIA) is a California nonprofit, public-benefit corporation founded in 1982. In partnership with the U.S. Forest Service, we maintain and staff Heaps Peak Arboretum. 

We’re committed to protecting and conserving our natural resources for future generations to enjoy.