Answer: What you describe sounds like damage from wood boring beetles. Although these insects can damage plants and may need to be controlled, they may be the result of an unhealthy plant rather than the cause. These insects are attracted to weakened and dying trees. While it may be important to attempt control of the insect, it may also be important to explore other reasons why the plant is declining. It is difficult to control borers because the adult beetles drill little holes and lay their eggs. When the eggs hatch the larvae is protected deep inside the tree. Perhaps your local cooperative extension office can guide you in the control of these pests. Hope so!
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