Hoyt Arboretum Friends (HAF) is a membership-based, nonprofit organization working in partnership with Portland Parks and Recreation to support Hoyt Arboretum.

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A Living Museum

Hoyt Arboretum provides a living classroom for students and teachers. A variety of educational and exploratory brochures are available at the Visitor Center. 

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Events & Classes

Upcoming Events & Classes

New events and classes have been posted to the calendar - check out our schedule, and learn something new today!

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Seasonal Highlights

It's winter at Hoyt Arboretum! Find out where you can best enjoy the winter season along our 12 miles of hiking trails.

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Please Support Us

Support for the Arboretum comes in many forms. For instance, you can become a member, send a donation, make a commemorative gift or volunteer your time.

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Welcome to Hoyt Arboretum


At Hoyt Arboretum, every tree has a story to tell. Founded in 1928 to conserve endangered species and educate the community, Hoyt Arboretum encompasses 189 ridge-top acres, accessible by 12 miles of hiking trails. A place of beauty and serenity in all seasons, Hoyt Arboretum is easily accessible from anywhere in the Portland metropolitan area by car, bus or the MAX light rail. A free shuttle is available in Washington Park from May through October. You will also find parking, restroom facilities, ADA accessible trails and ADA parking at or near the Visitor Center. 

An arboretum is a promise to future generations. Just as we are enjoying mature and wonderful trees that were planted many years ago, the trees we plant today will grow to provide shade, beauty and value for decades and centuries to come. More than 6,000 specimens from around the world grow here, including more than 2,000 species, 63 of which are vulnerable or endangered. Hoyt Arboretum is a living laboratory where anyone can enjoy trees and plants that are both familiar and unexpected.

Visit Hoyt Arboretum today and enjoy Portland's museum of living trees!

Member Benefits

Hoyt Arboretum Friends' members receive discounts from select nurseries and arborists including: 

Bamboo Garden
Collier Arbor Care, A Division of Bartlett Tree Experts
Emerald Tree
For the Love of Trees, LLC
Teragan & Associates, Inc.

Learn more here


HAF 2014 Annual Report

HAF’s 2014 Annual Report celebrates our many successes last year including the installation of the beautiful Bamboo Forest, the addition of 2.25 acres to the arboretum, the planting of 171 plants and improvements to the Winter Garden and Maple collection.  

Click here to read the entire 2014 Annual Report.

Access HAF's 2014 990 Form here.