Galls cause worry for tree owners each year, but in truth, most of these odd-shaped growths are more of a curiosity than a concern. This is the time of year people frequently begin to notice galls on ...

We have had numerous calls and samples about funny looking "bumps" on the leaves of oak trees. These growths are known as galls, and alarming as they may seem, they do not injure the plant. Galls are ...

ST. LOUIS – A giant force of nature is vulnerable to a minuscule wasp, capable of destroying it. This is the conflict between the oak tree and the oak gall. An oak gall wasp lays its eggs on the oak ...

Bright red bumps on maple leaves, a hairy green growth on a rose branch, a spherical bulge in an oak twig: By the end of the summer, many strange shapes have appeared on trees, shrubs and other plants ...

Question. My oak tree has woody growths on the limbs. Should I be concerned? Answer. You have spotted the handy work of quite small insects or mites. Oaks, especially the live oaks, seem to be ...

As mentioned in the previous garden update, galls that form on tree leaves rarely cause much in the way of tree stress. But there are also galls that form on other parts of trees. In most cases, gall ...

Fuzzy orange galls like this are common on oak leaves. They are caused by the leaf's reaction to a tiny wasp egg. Credit: Courtesy of Terri Umble This story was originally published in September 2020.

Those valley oak trees (Quercus lobata) in California's Central Valley have a lot of gall. Scientists Ian Pearse, Maxwell Joseph and Melanie Gentles of the UC Davis Department of Entomology knew that ...

CUTLINES - Q: My pin oak tree has lumpy growth on the limbs that someone said were galls. What should I do about this? I don't want to lose my tree. C. B. TulsaA: Oak tree galls come in many forms, ...

Galls cause worry for tree owners each year, but in truth, most of these odd-shaped growths are more of a curiosity than concern. Galls have long been a part of tree life in Missouri and elsewhere in ...