Oak Galls: Species-Specific, Not a Health Threat

Gall Basics

Galls are abnormal growths induced by insects (mostly tiny wasps) or mites. Each gall-maker targets specific host species.

Replacement Tree Risk

A spreading oak replacing a gall-infested peach leaf oak is unlikely to be attacked by the same insect. Even if galls appear, they cause negligible harm—cosmetic only.

Recommendation

Choose the oak you prefer. Don't let galls drive the decision.