Emerald Ash Borer (EAB) is an exotic beetle that originally came from Asia and feeds on ash trees. The first confirmed case of EAB in Minnesota was in 2009 in the St Paul area. EAB has spread widely and quickly to other ash trees and is a cause of significant damage to area trees. If caught early, it is possible to treat EAB before the tree dies and must be removed. The ISA certified arborists at YTS have been working on effective EAB treatment since the first reported cases in our area and have successfully developed industry leading techniques that can save a tree on your property with EAB.
EAB Signs and Treatment
Both the larvae and adult Emerald Ash Borer will feed on ash trees. The beetles are bright green and have a purple stomach. They are fairly small and often difficult to see. The EAB larva actually cause even more problems for trees, as the adult beetles and the larvae rob the trees of food, nutrients and water and feed themselves. The larvae leave the tree to starve. Trees will generally die within 3 years of being infested with EAB.
Some of the most obvious visible signs of EAB in Minnesota trees are:
- ‘D’ shaped holes visible in the Ash tree’s bark
- ‘S’ shaped designs many times indicate that the larvae are feeding underneath the bark
- Increased Woodpecker activity around the tree. Woodpeckers eat Emerald Ash Borer.
- Bright green beetles flying in the area
- Thinning of the leaves at the top of the tree
- Dying Branches
ISA Certified Arborists Treating EAB Infested Trees
If you notice any of the signs of EAB, it is critical that you contact a professional with experience diagnosing and treating EAB, to give your tree(s) the best chance for survival. YTS can assess the EAB risks for a tree in the area and develop an appropriate treatment plan for the tree to potentially save the tree and prevent EAB from spreading to other nearby trees. If our arborists are contacted early, it is possible to treat trees with tree injections, which have been documented to be a successful treatment for EAB. Early treatment is essential to the long-term viability of an affected tree.
YTS is passionate about the trees in the St Paul, MN area and is devoted to staying current with any and all new treatment methods for EAB and other tree disease. A member of our team is available 24/7 at (612) 331-1133 if you need emergency service, or if you suspect that one of your trees has been infested with EAB.