Add Yahoo as a preferred source to see more of our stories on Google. Galls are abnormal growths on a part of the plant. They can be caused by bacteria, insects, mites and fungi. They can be on any ...

‘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 ...

1. Neotropical insect galls : status of knowledge and perspectives / G. Wilson Fernandes, Marcel S. Coelho, and Jean Carlos Santos -- 2. Developmental anatomy of galls in the Neotropics : arthropods ...

Insect-induced galls represent a fascinating mode of plant-insect interaction where specialised insects manipulate host plant tissues to form complex structures that provide both shelter and nutrients ...

A gall is an abnormal growth or swelling of a plant caused by hormones released from insects, mites, bacteria, or nematodes. They can appear on any part of the plant with vast variation in morphology, ...

While walking around our property this week, I came across two interesting things going on with our pin oak trees. The first thing that caught my eye was what looked like a white grape growing from an ...

Galls are growths on leaves, stems, branches, trunks, and roots caused by various agents. But they are usually induced by either insects or a fungus of some sort. The exact manner in which insect ...

Dear Neil: What are the pimple-like growths on the leaves of my hackberry tree? Are they harmful? Those are insect galls that result when the female insect stings the leaves of the tree and lays her ...

Plenty of animals build their homes in oak trees. But some very teeny, tricky insects make the tree do all the work. “What nerve!” you might say. What … gall! And you’d be right. Oak galls are caused ...

This sounds to me like your witch hazels have galls. Insect and mite galls are common on trees and shrubs throughout the Chicago area and are generally nothing to be concerned about. Leaf galls rarely ...