BURR OAK QUESTION
WONDERING WHAT KIND OF PROBLEM THIS IS ON MY YOUNG BURR OAKS, THIS IS THE SECOND YEAR FOR PRODUCING ACORNS. THE BIGGERST PROBLEM IS KEEPING THE SQUIRRELS FROM EATING THE ACORNS..LOL. WELL IT WON'T LET ME DOWNLOAD MY CLOSE UP OF THE LEAF. ITS TINY BROWN SPOTS AND LIL MOUNDS UNDERNEATH WHICH I SCRAPED OFF BEFORE I DECIDED TO TAKE THE PICTURS. BROWN CIRCLES ON TOP, VERY TINY. I COULD EAMIL THE PICTURES IF U HAVE ONE. I THOUGHT I WOULD START HERE, IF U HAVE ANY OTHER SUGGESTIONS ON WHERE I SHOULD ASK, ADVISE ME PLZ.
Clinton County Iowa
The spots on the oak leaf are some type of gall. Galls are abnormal growths of plant tissue induced to form by mites, insects, or other small organisms.
In most cases, galls do not cause serious harm to healthy trees.
Additional information on galls can be found at https://store.extension.iastate.edu/Product/ic417-pdf