found, then serious diseases will occur all that year. Oak Apple Day (or Royal Oak Day) is a former public holiday in England on 29 May that commemorated the Restoration of Charles II in 1660. The popular name refers to the event during the English Civil War when Charles hid in an oak tree. The commemoration persists in some areas today, although festivities have little to do with the Restoration. Gallery See also Knopper gall Oak Apple Day Pineapple gall References External links Amphibolips confluenta Biorhiza pallida Gloucestershire Naturalists' Society photograph of galls with 'red apple' appearance See also: The Oak Apple Gall Cynipoidea Oak galls