Installation of utility pipes and lines may also damage roots. Filling, excavating or compacting soil beneath trees can hurt their health. Diseases, frost damage, pesticide injury or defoliation by leaf feeding insects can weaken trees. Borers are particularly damaging to newly transplanted trees and those weakened by various causes such as drought, sunscald of the bark, mechanical damage, ice storms, and fire damage. It should be noted that many of these borers are secondary invaders of trees that are dying or dead.
The azalea stem borer, carpenterworm, locust borer, southern pine beetle, granulate ambrosia beetle and the whitepine weevil are discussed in more detail in Ornamental and Turf Insect Notes on trees. Many common wood borers are the roundheaded and flatheaded borers.
General Information Skip to General Informationįive groups of wood boring beetles infest trees and shrubs in North Carolina: roundheaded wood borers, flatheaded wood borers, weevil grubs, ambrosia beetles and bark beetles.
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