Emerald Ash Borer

Help Protect Portland’s Ash Trees

The Emerald ash borer (EAB) is an invasive beetle responsible for the loss of 100 million ash trees since its arrival in the US. EAB was spotted for the first time in Oregon this past summer in Forest Grove. Urban Forestry staff at the City of Portland are participating in a statewide task force and taking other steps to monitor and prepare for its arrival and spread. The City will be alerted once emerald ash borer arrives. However, you can help keep an eye out and monitor our local ash (Fraxinus spp.) trees using Urban Forestry’s new, interactive map.