Plant Diagnostics

Oak leaf gall - Several


Several different wasp species cause galls on oak leaves.


Galls form as globular green shapes later drying and browning on leaf surfaces and twigs. Galls range from 1- 15 mm.

Cultural Controls

Rake and destroy fallen leaves.


Treatment is not necessary. If used, apply as leaves are expanding.

Chemical Controls

Signal Word: Caution
Pesticide Class: Organophosphate
Signal Word: Caution
Pesticide Class: Synthetic pyrethroid
Signal Word: Caution
Pesticide Class: Synthetic pyrethroid

Locations Affected

leaves, needles

Plant Environment


Scouting Season:

April - Late , May - Early

Plants Affected

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