“We encourage folks to learn how to identify ash trees and learn the signs of EAB. And if you have an ash tree that you’re worried about, contact an arborist to have it assessed.” (Image: @friendsoftrees)
A little over a month ago, the first Emerald Ash Borer, Agrilus planipennis, was found in Washington State. This is devastating news, because this invasive metallic green beetle is essentially a death sentence for the ash trees of the Pacific Northwest. It may have been inevitable, but that doesn’t mean we can’t mourn the future losses and do our best to slow the expansion of this true disaster.
For those not familiar with the story of the Emerald Ash Borer (EAB), there’s a boatload of information about them online (including this, written by yours truly). However, here’s a brief recap. These little beetles were accidentally introduced to North America from Asia and were first noted in Michigan in 2002. For the past two decades they have been tearing through North America’s ash trees, both wild populations and urban street trees are being devastated by the beetle, which has no environmental controls outside its natural range (trials of biological controls like using parasitic wasps have been largely unsuccessful). Thus far, there are no permanent solutions to EAB, even insecticides are only somewhat useful.
When I call Emerald Ash Borers one of the worst invasive species in the United States, I’m not just being dramatic — millions of ash trees have already succumbed to them across the country. This topic deserves an update on Pikes/Pines because we know this will happen in the near future — earthquakes, volcanic eruptions, and the climate crisis all will too, but they all feel different. We’ll see ashes decline and disappear from our urban and wild landscapes in the near future. Continue reading →
