Join the Oswego Lake Watershed Council for a free Ash and Oak Workshop Series focused on protecting our urban forest and preparing for invasive tree pests. Funded by the City of Lake Oswego Municipal Grant Program, these workshops support implementation of the City’s Urban and Community Forestry Plan and help strengthen community resilience to climate impacts.

Participants will learn how to identify signs and symptoms of invasive beetles such as the emerald ash borer and Mediterranean oak borer, which can cause severe damage to trees. The workshop will also introduce opportunities to participate as community scientists helping collect local tree inventory data. The session will include presentations from experts, including ISA Certified Arborist Brian French.

Location: Friends of Tryon Creek Education Pavilion, 11321 SW Terwilliger Blvd, Portland

• Saturday, April 18, 2026 | 9:30 AM – 12:30 PM

Registration is required. Additional event details will be shared with registrants in advance. Learn more and register here