Emergence begins around mid May. I found this one emerging from a surface root!!
Adult EAB breed quickly and will lay their eggs in the crevices of the bark where they will hatch in roughly two weeks.
The larval Stage feed on the phloem (the layer just beneath the bark that transports nutrients & water) and make "S" shaped galleries cutting off the supply to the tree above.
After a few short years of reproducing and larval tunneling cutting off the flow, the Ash tree dies!
An infested Ash branch.
After egg hatch and larvae finish tunneling by October, they wait until spring to pupate and emerge as adults from "D" shaped holes.
Injecting is a great option for larger trees around 25" diameter at breast height (DBH) and up. Using Emamectin Benzoate biennially, at the correct dosage and rate will help protect your Ash trees from future attacks as well as greatly reduce an already existing infestation of Emerald Ash Borer
A biennial trunk spray using Dinotefuran can be as effective as an injection on the Emerald Ash Borer when mixed at the correct rate. It's applied to the bark so a thinner barked tree is best for this method. CAUTION- this is a neonicotinoid so the upmost care needs to be taken when applying. Bees can and will die if applied to any flowering trees / plants pre-flower. We need our bees!!
A soil drench using imidacloprid works well on smaller, younger trees. It is made up of bigger molecules than the other options so an older tree will take much longer to disperse the chemical through translocation. CAUTION- also a neonicotinoid....Save the bees!!