Insect Problems

What Is Eating My Oak Tree?

Various species of caterpillars chew on the leaves of local oak trees. These species include: Western tussock moth ( Orygia vetusta), California oakworm (Phryganidia californica ), and Fruittree leafroller (Archips argyrospilus) to name a few. There are other larvae that may chew oak leaves. Certain conventional insecticides or formulations of Bacillus thuringensis may be used to control larvae populations. Conventional insecticides are generally non-specific to their targets, while the Bacillus thuringensis sprays are target specific to moth and butterfly larvae.

Symptoms & Solutions

To the company at the answering desk and the men who did the job—Very great from first to last. We appreciate your skill and professionalism. Lisa, Portola Valley

TCIA Accredited Certified Treecare Safety Professional Quality - Integrity - Confidence ISA Board-Certified Master Arborist International Society of Arboriculture