Following the protocols set by the Nebraska Forest Service, the Nebraska Department of Agriculture and the University of Nebraska, Lincoln Tree Service will begin to treat ash trees by micro-injection when the borer has been found with 15 miles of Lincoln.
Professionally applied trunk injections are the most effective treatments, especially for large trees. Their main drawback is the damage they cause to the tree and therefore are best applied by certified arborists well-trained in the procedure. The most common products available to the homeowner are soil applications, but they are somewhat less effective than injections and have a greater chance of harming beneficial insects, such as bees.
“Treatments need to be applied every one to two years and must be done for the remaining life of the tree,” said Mark Harrell, Forest Health Program Leader with the Nebraska Forest Service.
Owners of ash trees outside of the Omaha area may be anxious to begin treatments, but the recommendation is still to wait until EAB has been found within 15 miles of your trees. The chances that your tree will be the first one infested is very low, especially if it is being well cared for. The current treatment consideration zone extends from Fort Calhoun to Plattsmouth and from Gretna to east of Council Bluffs.