Over the past few years, we've seen quite an increase in the number of oak trees affected by oak gall. These galls are roundish, very hard growths that surround the twig of several types of oaks ...

Many coast live oak (Quercus agrifolia) trees are showing unusual browning in their canopies in the last month or two. If you look carefully, you may see small, crescent-shaped galls forming on the ...

If you spend enough time looking at and working with plants, you’ll inevitably come across galls. Galls are abnormal growths and can be caused by a variety of different organisms, including insects ...

Dear Reader: These are galls that have resulted from the stings of the tree tissue by a small wasp as she lays her eggs in the current season’s growth. Oaks are host plants to scores of different ...

Hundreds of species of small wasps called gall wasps live in the forests of North America. Hundreds more species of them are spread worldwide. In Southeast Missouri oak trees are a favorite host plant ...

Q: My red oak is about 10 years old. Some of the leaves are starting to look distressed, so I looked closely. I noticed small red ants climbing up and down the trunk, almost as if they are harvesting ...

While walking to the mailbox one sunny morning I saw odd-looking spheres hanging from one of the young white oaks. About the size of golf balls, they were white with a few brown spots and fuzzy.

Gardening season is underway, and you may have questions. To ask one, simply go to the OSU Extension website, type it in and include the county where you live. A photo is very helpful. Q: Our oak tree ...

Persisting in the winter months as ball-shaped shells on oak trees, galls, which are considered an eyesore by landscapers in the summer months, appear as a sort of curiosity in winter. What are these ...

Have you ever walked in the shade of a mighty oak tree? In late summer or fall, you may find an odd little brown woody ball attached to a fallen twig. Look up into the tree, and you may see more ...