Oak galls are abnormal plant growths found on foliage and twigs that are produced by small oak gall wasps. Shapes of galls vary from spherical to urn-shaped to star-shaped to fuzzy. Pruning twigs that host oak galls is a simple and effective way to help stop the cycle.

Galls are abnormal growths that occur on leaves, twigs, or branches. They may be simple lumps or complicated structures, plain brown or brightly colored. There are 1500 species of gall producers, the majority of which are insects and mites. Some galls form where insects or mites feed or lay eggs.

Gouty and horned galls are abnormal growths or swellings comprised of plant tissue found on leaves, twigs, or branches. These deformities are caused by a tiny, non-stinging, wasp which produces a chemical or stimuli inducing the plant to produce large, woody twig galls.

Mar 29, 2024 · Galls are abnormal growths created by the oak tree in response to tiny insects such as wasps, months, aphids, etc. These critters lay eggs or feed on the tree, triggering the plant to form a protective (and sometimes quite bizarre-looking!) structure around them.

Jun 19, 2023 · There are a variety of gall-forming species of small wasps that commonly infest oak, Quercus spp., trees in Pennsylvania. Most leaf galls on oak cause little or no harm to the health of a tree. However, twig or branch galls may cause injury or …

Aug 25, 2010 · Oak bullet galls are common twig galls on our native bur oaks. Bullet galls are hard, round, and pea-to-knuckle-sized, and usually are most apparent by August. Jumping oak galls grow on leaves and look a bit like small, round seeds or BBs. The galls fall off the oak, carrying the larva with them.

Aug 4, 2023 · Oak galls, also referred to as gall oak or gall on oak tree, are unusual growths that develop on oak trees. These formations are the result of a fascinating interaction between the tree and small oak gall wasps.

Feb 2, 2021 · Oak apple galls look like small, round fruit but they are actually plant deformities caused by oak apple gall wasps. If you want to know how to get rid of oak galls, click this article for oak apple gall treatment and information.

Sep 3, 2023 · Oak galls are abnormal growths on oak trees caused by the presence of insect larvae, mostly wasps. These galls occur due to insects, like oak gall wasps, laying eggs in the tree’s tissue, which leads to chemical reactions that cause plant cells to swell and form the gall.

These are wasp galls that appear on white oak in early summer and resemble toasted marshmallows. One gall is actually a group of small hairy galls joined at a common spot on a twig. They can be pulled apart to see seed-like structures that contain the developing wasps.