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 ...

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 ...

Residents of Leon and Wakulla counties may be noticing dead or dying laurel oaks in yards or along the roads. If you look at these trees carefully, you will see round, wooden balls on the twigs and ...

In northern New England, acorns ripen in late summer and normally drop from oak trees from September through October. They may fall earlier, however, for a host of reasons, from eager squirrels ...

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 ...

‘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 ...