How to Manage Pests

Pests in Gardens and Landscapes

Peachtree borer—Synanthedon exitiosa

The adult peachtree borer is a steel blue to black clearwing moth. Larvae are light brown or pinkish with a darker head.

Identification of species | Life cycle

Damage

Damage is found primarily in the crown area or lower part of the trunk above or just below the soil line. These pests can girdle and kill a healthy young tree. Older trees are sometimes attacked but they usually tolerate the damage unless there are many larvae or a tree is attacked several years in a row.

Solutions

Keep trees healthy and vigorous. You can remove borers through a technique called worming during fall, winter, or early spring. Treatment of trunks with insecticides or parasitic nematodes can be effective.

Peachtree borer larva
Peachtree borer larva

Peachtree borers damage near the soil line
Peachtree borers damage near the soil line


Statewide IPM Program, Agriculture and Natural Resources, University of California
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Agriculture and Natural Resources, University of California

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