Q • My oak trees have more large galls than I’ve ever seen on them, and I’m worried about their health. What can I do about ...

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.

You’re admiring the stalwart limbs and sculpted leaves of your handsome oak tree, and suddenly you see them: warty bulges clustered along the branches like bunches of freaky grapes. There&#82… ...

Oak galls are more a curiosity than a true pest, but they are attention-grabbing when first seen. Hundreds of different kinds of galls can form on oak buds, twigs, leaves or acorns, most caused by ...

When you look up into the bare branches of some oak trees at this time of year, you can see ball-shaped growths hanging there, looking almost like nature’s Christmas ornaments. These are galls.

Q.: I have six 90-foot tall oaks in my yard. As the leaves fell, I see that many are covered with tiny button-shaped things. It seems worse with the white oak rather than the red oak. Earlier in ...

Galls called “oak apples” may be golf ball-sized found on both leaves and stems, and will be green in spring, and will dry out and turn brown and papery as the wasp larva matures inside.

Plenty of animals build their homes in oak trees. But some very teeny, tricky insects make the tree do all the work. “What nerve!” you might say. What … gall! And you’d be right. Oak galls ...

When you look up into the bare branches of some oak trees at this time of year, you can see ball-shaped growths hanging there, looking almost like nature’s Christmas ornaments. These are galls ...

Hedgehog galls, like most galls that appear on trees’ leaves, may look bizarre but they are not a serious problem. If you find a gall on a branch unsightly, prune it off, Yiesla said.

The growths pictured on a reader's red oak, called galls, are an indication the tree is stressed.(Tommy Byrd) I have two red oak trees in my front yard that are about 10 years old. One of the ...

Once the gall egg is laid on a leaf, it takes three years to mature. Galls can kill the trees but it’s a slow death that could take years. “You’re not only seeing what damage you have this ...