Volunteer at Hoyt Arboretum

Volunteer at Hoyt Arboretum

Volunteers are the heartbeat that make nearly every Hoyt Arboretum program possible. They keep trails cleared, lead field trips and tours, assist visitors in the Visitor Center and on the trails, contribute to community science initiatives, and expand the herbarium.

If you are interested in becoming a part of the team that keeps the Arboretum thriving, consider the various volunteer opportunities offered through Hoyt Arboretum Friends. In addition to the programs below, volunteers also support administration and database management, outreach, photography, social media, and special events. Our Board of Directors and committees are also volunteer positions.

If you have further questions, contact volunteer@hoytarboretum.org or (503) 823-1649 to learn more about the full range of opportunities.

When you’ve read through the program descriptions and are ready to take the next step, fill out the volunteer interest form.


  • Tuesday Crew volunteers maintain our trails and trees on Tuesdays, all year round.
  • Saturday Crew volunteers maintain our trails and trees during the growing season from April through October.
  • Groups — corporate, civic, educational, or otherwise — are welcome to schedule private volunteer work parties.

Visitor Engagement

  • Trail Rovers are walking ambassadors, traveling the trails to greet guests and interpret the Arboretum.
  • Visitor Center Representatives are often a visitor’s first point of contact and provide trail recommendations, botanical knowledge, facilities, and history.


  • Arboretum Naturalists are trained to lead school field trips and family activities like preschool walks and Family Forest Days.
  • Tour Guides lead interpretive tours to introduce visitors to Hoyt Arboretum, its tree and plant collections, and our role in global conservation
  • Tree Time! volunteers introduce preschoolers and their parents to the wonders of nature through stories, nature walks, and craft activities

Community Science

  • Project BudBurst is a nationwide project in which community scientists record the responses of plants and trees to the changing seasons, a field known as phenology. These observations will be useful in determining impacts of climate change and other human impacts on plant life.
  • The Invasive Rubus (Blackberry) Community Science Project trains and sends volunteers to parks and natural areas around the Portland area to identify various invasive species of blackberry.
  • Herbarium Archivists assist in the creation and imaging of voucher specimens in our herbarium.


Benefits of Volunteering

  • After 15 hours of volunteer service, you get membership with Hoyt Arboretum Friends.
  • Volunteer community potlucks, learning lunches, and classes just for volunteers.
  • The great feeling of being a part of a community dedicated to keeping the Arboretum a treasure for generations to come!


Upcoming Volunteer Opportunities

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