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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Guided Tour of Hoyt Arboretum

Saturday, August 22nd, 12pm

Join a Hoyt Arboretum tour guide on an informative journey through our tree and plant collections! Each tour guide brings a unique perspective to the arboretum, so every week is a new experience. Please meet at the Visitor Center. Registration is not required. Recommended $3 donation/person; HAF members are free!

Saturday Crew

Saturday, August 29th, 9am-12pm

The Saturday Crew helps with trail maintenance, invasive species removal, special projects and more. No experience required; tools and instruction provided. Email volunteer@hoytarboretum.org to sign up, or sign up online here.

Guided Tour of Hoyt Arboretum

Saturday, August 29th, 12pm

Join a Hoyt Arboretum tour guide on an informative journey through our tree and plant collections! Each tour guide brings a unique perspective to the arboretum, so every week is a new experience. Please meet at the Visitor Center. Registration is not required. Recommended $3 donation/person; HAF members are free!

Guided Tour of Hoyt Arboretum

Saturday, September 5th, 12pm

Join a Hoyt Arboretum tour guide on an informative journey through our tree and plant collections! Each tour guide brings a unique perspective to the arboretum, so every week is a new experience. Please meet at the Visitor Center. Registration is not required. Recommended $3 donation/person; HAF members are free!

Guided Tour of Hoyt Arboretum - Labor Day Tour

Monday, September 7th, 12pm

Join a Hoyt Arboretum tour guide on an informative journey through our tree and plant collections! Each tour guide brings a unique perspective to the arboretum, so every week is a new experience. Please meet at the Visitor Center. Registration is not required. Recommended $3 donation/person; HAF members are free!

Saturday Crew

Saturday, September 12th, 9am-12pm

The Saturday Crew helps with trail maintenance, invasive species removal, special projects and more. No experience required; tools and instruction provided. Email volunteer@hoytarboretum.org to sign up, or sign up online here.

Guided Tour of Hoyt Arboretum

Saturday, September 19th, 12pm

Join a Hoyt Arboretum tour guide on an informative journey through our tree and plant collections! Each tour guide brings a unique perspective to the arboretum, so every week is a new experience. Please meet at the Visitor Center. Registration is not required. Recommended $3 donation/person; HAF members are free!

Saturday Crew

Saturday, September 26th, 9am-12pm

The Saturday Crew helps with trail maintenance, invasive species removal, special projects and more. No experience required; tools and instruction provided. Email volunteer@hoytarboretum.org to sign up, or sign up online here.

Seize the Trees at Hoyt Arboretum for the Third Annual Parke Diem!

Friday, October 9th, 9am-12pm AND 12:30pm-3:30pm

Saturday, October 10th, 9am-12pm 

Join other tree enthusiasts for 2 days of trail work, re-potting plants, planting, ivy and blackberry removal, and other tasks. All volunteers will get a tee shirt and a swag bag! Most importantly, we’ll be participating in the largest park wide volunteer event in the country and the Arboretum will be trying to host the largest group in the system! 

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