Peach tree borers can cause severe injury to apple, apricot, peach, plum and cherry trees. In addition, they also may carry fungus infections that will further damage your fruit trees. The adult moths lay eggs at the base of trees. When larvae emerge in spring, they bore into the trees. To stop them, use two traps per mature full-size tree; one for a dwarf tree. Set out these traps by May 15. Each phero mone lure lasts 8 weeks; and they also attract lilac borer, banded ash borer, oak borer, dogwood borer and rhododendron borer. In addition, you will receive a Pest ID guide.