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 .

2021年2月2日 · 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.

2021年9月16日 · Oak galls are caused by a group of small insects known as gall makers. Contrary to public perception, they do not endanger an oak's health. Oaks are not the only host plants for galls.

2023年8月4日 · 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.

2024年3月29日 · 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.