Q. We have a pin oak tree that is approximately 30 feet tall. On the north-facing side of the tree there are many wilted leaves, and there are many balls of strange growth. Pictures of the leaves and ...

Oak apple galls are attached to the oak leaf as round light-green balls up to 2 inches in diameter and house a single wasp larva. They often have a mottled maroon pattern on the surface.

Cicada season may be over, but another pest emerges right after. Here's how to prevent possible bites and rashes from oak ...

He also notes in an article in Bay Nature Magazine, that the urchin gall is most often found on blue oak trees. What you are observing is the tree’s reaction to the wasp laying her eggs on its leaf.

Eileen Buss of the University of Florida entomology department says that "the galls probably occurred after the first spring leaf expansion on oak trees, but are not likely to be damaging to trees ...

Galls are abnormal growths and can be caused by a variety of different organisms, including insects and mites, and ...

Your perfectly round ping-pong-sized galls were probably caused by a gall wasp or, as entomologists call them, the cynipid wasp. Most galls are small, but some can be as large as 2-inches in diameter.

DEAR JOAN: There has been much discussion on Nextdoor about oak galls lately, mostly about how the galls are harmless to the tree and that they’re quite prevalent this year on oak trees around ...

The other gall I found, which was on a different tree, was an oak leaf pocket gall. This gall is produced by a one-eight-inch-long fly, or midge, called Macrodiplesis quercusoroca.

LITTLE ROCK, Ark. (June 30, 2015) – Leaf damage has been confirmed in clusters of white oak trees in north and central Arkansas areas due to Jumping Oak Gall, or small plant growths caused by ...

Q • I have an oak tree out front that dropped leaves in a recent storm. I picked up a leaf and noticed "nodules" all over the leaf. Can you tell me if my tree has a problem or if this is normal ...