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. Inside the galls are the eggs and larvae of the insects.

An oak apple or oak gall is a large, round, vaguely apple-like gall commonly found on many species of oak. Oak apples range in size from 2 to 4 centimetres (1 to 2 in) in diameter and are caused by chemicals injected by the larva of certain kinds of gall wasp in the family Cynipidae .

Mar 29, 2024 · What are Oak Galls? 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 …

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.

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.

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.

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. Inside the galls are the eggs and larvae of the insects.

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.