Where can you find oak galls?

Oak galls can be found on oak trees, where they form as a result of certain insects, such as gall wasps, laying their eggs in the tree's tissue. These galls typically appear as round, swollen growths on the leaves, stems, or branches of the oak. Oak galls can be found in various regions where oak trees grow, including forests, parks, and urban areas. The specific types of galls may vary depending on the species of oak and the type of insect involved.