Have you seen those beige, 3-inch balls growing on oak trees? Have you seen those red beads or pods growing on manzanita leaves? They are called galls.

Context Explanation

Oak galls are caused by gall wasps, a small ... 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 ...

Insight Material

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 ... 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 ... abc13: What are oak galls, and why could there be more in Houston this fall?

Final Conclusion

HOUSTON, Texas (KTRK) -- Oak galls are popping up everywhere this fall! They're the tiny, fuzzy yellow or brown balls on oak leaves and branches. You could spot one or two, then dozens around the same ... What are oak galls, and why could there be more in Houston this fall? Tallahassee Democrat: Eastern horned gall wasp may be culprit in laurel oak's decline