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Home  > Tree Care  > Tree Insects  > Peachtree Borer


Synanthedon exitiosa

Peachtree Borer can be found throughout the United States and Canada east of the Rocky Mountains wherever trees in the Prunus species are grown. The larvae of the Peachtree borer feed on the cambium near the base of tree trunks and in the upper roots. The feeding damage disrupts the flow of water and nutrients within the tree. The result is a structurally weakened tree with reduced vigor. Young trees may be completely girdled and killed by Peachtree Borer.


Any tree in the Prunus genus can be a host to Peachtree Borer. This includes Apricot, Cherry, Nectarine, Peach, Plum, and Prune trees.


Due to the reduced flow of water to the upper canopy tree leaves may be wilted or brown. Brown leaves will temporarily remain on the tree. Sap may be seen coming from borer exit holes near the base of the tree trunk or on larger exposed tree roots. A high level of Peachtree Borer infestation may cause a tree to break off near the base in high winds.


Cultural Options

Like many borer insects, Peachtree Borers are attracted to stressed trees. Tree fertilization and watering during drought will minimize plant stress. Peachtree Borers are attracted to wounds, so keep mowing equipment away from tree trunks by mulching around trees.

Pesticide Options

Protective tree spraying can be done just before or during egg hatch to prevent the larvae from entering the tree. Tree spraying should be directed to the lower trunk and the ground in the immediate vicinity of the tree. More than one tree spraying treatment should be applied for optimum effectiveness.


Peachtree Borer larvae. Photo: Clemson University - USDA Cooperative Extension,

Adult Peachtree Borer Photo: Clemson University - USDA Cooperative Extension,

Peachtree Borer damage. Photo: Randy Cyr, Greentree,

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