The ash borer (Agrilus planipennis fairmaire) is a little green beetle with a big appetite for ash trees, which are beautiful shade-bearing trees that are part of many western U.S. landscapes. This little bugger was first found stateside in 2002 in Michigan, probably having traveled there on hardwood shipping pallets or crates out of Asia by plane or cargo ship. They have now been found in Michigan, Indiana, Minnesota, Illinois, Kentucky, New York, Missouri, Kansas, Ohio, Colorado, West Virginia, Virginia, Pennsylvania and Wisconsin—as well as in Canada, in Ontario and Quebec.
These tiny metallic beetles feed on the leaves of ash trees but don’t hurt the tree’s inner infrastructure as such. It’s the life cycle of the pest that causes the big problem. Emerald ash borer larvae eat the inner bark of a tree, and this hurts the vascular system—the network that carries nutrient-rich moisture to branches and leaves, helping the tree survive. When the vascular system sustains enough damage, the tree dies. Within two years of infestation, most of a tree’s canopy will basically starve to death. Without healthy leaves to complete photosynthesis, the tree dies soon after.
Facebook
X
Youtube
Copy Link
Email