Most City offices closed Wednesday, June 19, to observe Juneteenth

The City of Portland recognizes Juneteenth as a formal day of remembrance to honor Black American history and the end of slavery in the United States. Learn about Juneteenth.

Ainsworth Linear Arboretum Tree Walk

Classes and Activities
Come explore Portland's Linear Arboretum on a Saturday morning this spring with founder Jim Gersbach.
A volunteer shares information about the trees of the Linear Arboretum to passerbys during Sunday Parkways.
9:00 am 10:30 am

Register Here

Where: Ainsworth Arboretum (Meet on the SE corner of NE 30th Ave and NE Ainsworth St. )

When: Saturday, April 16, 2022. 9:00 am - 10:30 am. 

Come explore Portland's Linear Arboretum on a Saturday morning this spring. The 90-minute walk will be led by Arboretum founder Jim Gersbach, a graduate of UF's Neighborhood Tree Steward program and a member of the Concordia Tree Team.

In 2005 as part of his neighborhood tree steward project he came up with the idea of devoting the Ainsworth median and north and south right-of-way planting strips as places to plant new and promising street trees. The walk will cover how the project has diversified a "maple desert" into a diverse tree-scape featuring many trees not commonly seen elsewhere in Portland. Learn more and register online.

Before Attending

Before registering or attending any in-person event, please visit our Workshops page to read about our Safe Stewardship Guidelines. 

Close-up image of the cone of a Douglas-fir tree.

Portland Parks & Recreation Urban Forestry's mission is to manage and ensure Portland's urban forest infrastructure for current and future generations. Portland’s urban forest consists of 218,000 street trees, 1.2 million park trees, and innumerable private property trees.

Urban Forestry is involved in managing or regulating all of these trees to differing degrees. Urban Forestry staff issue permits for planting, pruning, and removal of all public and some private trees and are on call 24/7 to respond to tree emergencies.

For more information on Urban Forestry -