There are many different borer insects around the world that come in many different sizes and colors. But one thing they all have in common is the danger they pose to trees. These insects tunnel their way deep into trees and feed on the heartwood. Symptoms of infestation differ depending on the type of borer insect, but you can usually tell by the holes left behind in the bark. You may also notice sap or sawdust gathered around the tree or even sudden discoloration of the leaves. If left untreated, borers can kill the tree. Five Star Tree Services has put together a simple guide that will help you identify infestations so they can be treated ASAP. 4 Common Borer Species We are going to go over four of the most common wood boring insects that attack a wide variety of tree species in a range of climates. Many native borer insects will seek out already sick trees or trees under stress as opposed to strong healthy ones. But, even healthy trees are susceptible to infestation, especially from non-native borers. Locust Borer This type or borer attacks black locust trees; other types of locust trees are not in danger. They can be found in any place that black locust trees grow. Symptoms of an LB infestation are mainly localized swollen areas on the trunk or branches. These areas will look like a full knot. Other common signs are broken branches, thinness along the crown, and holes in the bark accompanied by sawdust. If you happen to see any of these signs, give our team of arborists a call as soon as possible. These borers weaken branches so that they break, which poses an additional hazard to your property and family. Emerald Ash Borer This type of borer usually feeds on ash trees but can also be found in rare cases in other types. They are commonly found in over states in the US but can be found in any location where ash trees grow. Symptoms of an EAB infestation are easy to spot. In the early stages, trees will exhibit cracks along the main branches of the canopy. As the stages progress, these cracks will turn into slits and holes that look like a “D” on the bark. The canopy of the tree will also start to think as the tree progresses towards failure. As soon as you notice any of these signs, you should contact an arborist as soon as possible. Treatment is more effective when applied early on in an infestation. Bronze Birch Borer This species usually attacks grey birch, paper birch, and yellow birch trees. Though they mostly attack stressed or sick trees, but again even healthy birch trees can become infested. River birch thankfully is not susceptible to this particular borer. They are found in any place white bark birch trees grow. Common signs of BBB infestations are winding tunnels along the out layer of the tree bark. They look bumpy or wrinkled. In some cases, you may also notice “D” shaped holes along the bark or leaves they have lost their color. Another common symptom is thinning along the crown and top of the tree. If found early enough, our professional arborists can apply an insecticide treatment and save the tree. Longhorned Beetles This species attacks a wide assortment of trees but tends to only attack those which are under a high amount of stress. They are found all over the world and are not specific to any one area. Common signs that an LB infestation is present is sawdust under the tree, round holes, and discolored leaves. It is important to contact a specialist as soon as you notice any signs of infestation. Quick action is key to slowing and defeating these harmful insects. How We Can Help Infestations can destroy the health of your trees, but with quick action, most can be saved. Five Star Tree Services offers a range of tree care services in Toronto including diagnosis and treatment of borer infestations. Give us a call at (416) 990-3355 to find out more.