Seeing unusual growths on your trees? Learn what oak tree galls look like, what causes them and how to manage them with ...

‘I have some weird, seemingly hollow, green, round balls falling from my oak tree. What in the world are these things?” — S.Y. You are describing an interesting growth that can occur on a variety of ...

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 ...

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 ...

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 ...

Bulging horned oak galls can be seen on fallen limbs piled up on the street in the 6400 block of Loughborough Avenue in front of a dead oak tree in 2023. The golf ball-size growths on oak twigs are ...

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 ...

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 ...

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 ...

Each year in late spring and early summer, homeowners begin noticing strange growths on the leaves or stems and are concerned for the health of their trees. Several different types of galls are common ...

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 ...

It’s pleasurable to tell homeowners that certain perceived tree problems aren’t threatening. Such is the case with ant presence. People notice ants moving up and down tree trunks and report that ...