GoodSeed Farm > Ash Borer Control

Ash Borer Control

Tiny Emerald Ash Borers are causing huge problems

Are Your Ash Trees Really Doomed?

If you have an ash tree in your landscape, you’ve probably already accepted that you’ll lose it sooner or later, due to Emerald Ash Borers invasion of southwest Ohio. Ash trees volunteer on our farm by the hundreds, and chances are they’ll be targeted by borers eventually. However, individual ash trees in home landscapes aren’t necessarily doomed.

It is possible to prevent borer infestation in ash trees, and in some cases even remedy and existing invasion. Borers attack the layer of bark that trees use to transport sap. Spraying them with insecticide is pointless, because the borers live inside the trunk where spray’s can’t reach. But by infusing the sap with insecticide it’s possible to kill the invaders. Homeowners can do this with an insecticide drench, like Bonide Annual Tree & Shrub Insect Control.

Emerald Ash Borers and Asian Longhorned Beetle have grabbed the headlines, but other boring insects can be just as destructive. Young red maple trees attract borers, which cause ugly scarring and often death by eating out the cambium layer of bark. By the time they’re discovered it’s often too late to save the tree. We recommend tree wrap on sapling Red Maples, and the ritual of an annual systemic insecticide drench just for prevention.

One application kills insects, and prevents new infestations for an entire year. No spraying, just mix and pour at the base of the plant. Systemic insecticide is absorbed through the roots to all parts of the plant, even new growth, and won’t wash off. You can use it on Ash trees, or on any listed fruit, nut and ornamental trees and shrubs. The drench kills borers, (including Emerald Ash Borer & Asian Longhorned Beetle), adelgids, miners, whitefly, scale, beetles, weevils and many more. You can read the label online to at to see if your particular tree or pest is listed.

The label instructions on Bonide’s annual drench call for on ounce of concentrate for each inch of tree circumference, in one gallon of water, poured around the base of the tree. Measure the distance in inches around your tree at chest height, and that’s how many ounces you’ll need. Mix it into a gallon of water, in a bucket or watering can, and pour it slowly so it can soak in right at the base of the tree. The product label has more details, including a restriction not to apply it to Linden or Basswood trees.