Home / Environment / Emerald Ash Borer Invades Washington, Threatens Trees
Emerald Ash Borer Invades Washington, Threatens Trees
25 Aug
Summary
- Invasive emerald ash borer beetle confirmed in Washington State.
- Pest could lead to total eradication of ash trees in the state.
- Discovery made by citizens who reported finding the beetle.
The emerald ash borer, an invasive species of beetle, has been confirmed in Washington State, raising concerns about the potential destruction of all ash trees in the region. State agencies verified the beetle's presence following its discovery on a car windshield in Hazel Dell on August 3rd. Citizens photographed the insect and reported it, leading to its collection and confirmation by the Washington State Department of Agriculture and the USDA.
This unwelcome arrival was anticipated, as the beetle had previously been found near Portland, Oregon, and Vancouver, British Columbia. In the past two decades, emerald ash borers have eradicated over 100 million ash trees across North America. Without intervention, municipalities could lose 90-100% of their ash tree inventory within 10-12 years of an infestation.
Efforts are underway to mitigate the spread, including a firewood quarantine that took effect on August 18th. While eradication has not been successful elsewhere, research is ongoing, including the use of parasitic wasps native to Asia that prey on the emerald ash borer. Community involvement and education are emphasized as crucial components in managing this long-term threat.
