The two-horned oak gall wasp is just one of dozens of species of gall wasps that incubate their eggs in oak leaves. Skip to content. All Sections. Subscribe Now. 70°F. Sunday, June 8th 2025 ...

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 ...

Of all the trees in your yard, the oak is practically a small habitat all by itself. So many creatures of all varieties depend on the mighty oak to provide it shelter, or food, or sometimes even both.

The eastern horned gall wasp has been around for a long time. We had a pretty severe epidemic in the mid-1990s, and local residents told me back then that another one occurred in 1984 in south ...

It was a leaf gall of a very small wasp called translucent oak gall wasp, Amphibolips nubilipennis. In early spring, the female wasp lays her eggs on the underside of newly developing oak leaves.

The wool sower gall (Callirhytis seminator) and oak wart gall wasp (Callirhytis quercusfutilis) only cause cosmetic damage to leaves. Gouty oak gall (Callirhytis quercuspunctata) ...

Gall wasps are a small breed of wasps that lay their eggs in Oak and Pecan trees. Their eggs grow into the tree, leaving a hard capsule around it, which the larvae inside will eventually eat.

Mites, nematodes, bacteria, fungi or viruses can initiate gall formation, but insects are mostly to blame. When a female insect lays an egg inside plant tissue and the larva emerges from that egg ...

In the case of the jumping oak gall, each gall contains a single wasp larva that feeds on the inner lining of the gall. The galls fall to the ground once the wasp larvae are mature.

Oak galls are popping up everywhere this fall! They're the tiny, fuzzy yellow or brown balls on oak leaves and branches. You could spot one or two, then dozens around the same tree. Oak galls are ...