How do you protect against the emerald ash borer?
Homeowners can protect ash trees against EAB with the systemic insecticide imidacloprid, applied to the soil at the base of the tree. It is most effective when applied in spring but can also be applied in fall. It is less effective on trees over 50 inches in circumference.
Is emerald ash borer still a threat in Wisconsin?
What you can do. While EAB is present in many Wisconsin counties, more of Wisconsin is still free of EAB than not. Many counties where it has been found have only small areas of infestation. That is why it is still critically important to limit the movement of ash wood and raw ash products.
How do you stop ash tree borers?
The most common way to control the emerald ash borer is to drench the soil around the tree with diluted insecticide. The tree absorbs the insecticide through its roots, killing the beetles as they feed on the tissues of the trunk laced with insecticide.
How long has the emerald ash borer been in Wisconsin?
That’s up from 48 counties this time a year ago. Since it was first found in 2008 near the Milwaukee River on the Ozaukee and Washington county lines, emerald ash borer has become well established in southeastern Wisconsin and continues to kill trees.
What damage does the emerald ash borer do?
The emerald ash borer’s larval stage is responsible for the damage that leads to the death of its host. The larvae’s feeding under the tree bark, eventually damaging the tree’s ability to transport moisture and nutrients from the soil to the tree’s leaves, causes ash tree decline and death.
Is the emerald ash borer a lethal beetle?
The simple answer is yes, the emerald ash borer is a lethal beetle to ash trees in particular. The emerald ash borer larvae shown here is responsible for restricting movement of nutrients through the tree and ends up killing it. Millions and millions of ash trees have already died in many states across the U.S.
What does emerald ash borer damage look like?
Emerald Ash Borer damages trees by tunneling underneath the bark of the tree and laying eggs (larvae). A close inspection can sometimes reveal a “D” shaped hole in bark where EAB enters. Then the larvae hatches and feeds in galleries under the bark. It looks like trails when bark is removed.
How did the emerald ash borer get to North America?
The emerald ash borer probably arrived in the United States on solid wood packing material carried in cargo ships or airplanes arriving from Asia, and has most likely spread by hitchhiking on firewood transported among homes and recreation areas in at least 34 states.