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 ...

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 ...

Question: We have been raking up some leaves from our oak tree. As the kids looked at some of the leaves, we noticed large bumps and some were very distorted. After observing the leaves, we looked at ...