what causes the leaves of an oak tree to curl
A. Leaves of oak trees can be attacked by erophytid (pronounced Arrow-Fie-Tid) mites which cause a curling reaction. You can spray with diazinon insecticide or just let nature take its course. The curled leaves are still functional and will support tree growth. All leaves will not be affected. 2. Q. We have a spectacular oak tree in our yard that had an infestation of oak galls last year.