Pine Bark Beetles

Dead pines are appearing throughout town due to Pine Bark Beetles; these beetles are a group of wood boring beetles that feed on pines. The beetles burrow under the bark, lay eggs in the tree, and the larvae burrow their way out, creating “exit holes.” Beetle damage may lead to secondary invasions, such as fungus and carpenter ants. The tree usually declines over several months and eventually dies.

Pine Bark Beetles are present in the environment but cause noticeable damage when trees are stressed. The recent hurricane, snow, drought cycle has caused trees to be stressed and more susceptible to the beetles. Signs of Pine Bark Beetle invasion include pin head sized holes in the trunk of the tree, visible red sawdust, yellowing of needles, and gradual browning of needles and death of the tree.

There is currently no reliable method for prevention other than ensuring that pines are in a healthy state. Regular fertilization, an application of compost, and adequate water during drought periods (per water rationing requirements) reduces chances of beetle invasion.

Since beetles spread from tree to tree, an infested tree should be removed as soon as possible to prevent further damage. Infested wood should be hauled off and/or burned to destroy beetles and larvae.

According to the current ordinance, pines are protected at 19 inch caliper (diameter) and larger. Trees located on commercial and/or HOA owned areas may require a permit for removal. For permit requirements and additional information about Pine Bark Beetles, please contact the City Arborist, Heather McKnight, at
(281) 554-1441.