Connie from Columbus, Nebraska writes
This kills the tree. They are 40 feet high pines. Had them for at least twenty years. I have never seen the bug.
A systemic product such as Prime Source Imidacloprid 2F Select T/I is best used for sucking pests such as aphids, scale, and whiteflies that feed on the green tissue of plants. If you are seeing limbs and/or trunks that are being eaten from the inside out, that is usually carpenter or termites who are breaking down the decaying wood. Keep in mind that these insects are generally only attacking a tree that is already dead or dying from other factors rather than the initial cause. We recommend that you inspect the trees for other signs of insects, disease, and other stress, and possibly consult with a local arborist to help you assess the general health of the trees.
If you are able to identify a specific issue, then we can assist you with treatment options.
Answer last updated on: 07/27/2022