Leaf and Twig Galls Oh My!
There are thousands of leaf and twig galls that impact numerous types of trees and plants. There are more than 500 different galls that impact oak trees alone! In almost all cases, leaf, twig, or any type of gall on a tree or plant is of minimal concern. The variety of galls though is quite […]
PHC on the Lookout – Have Galls?
Are you noticing green, red or black bumps on your maple tree leaves? Are there small lumps, spiny bulges or apple-like growths on your oak tree? How about green and purplish brown nipples on the leaf surface of your hackberry tree? Galls are commonly found in Illinois, affecting maple, oak and hackberry trees, plus many […]
PHC on the Lookout – Galls
Galls appear in different shapes, sizes and colors, depending on the insect causing them. For example, Hackberry trees are especially prone to Gall infestations caused by a psyllid insect (also called jumping plant lice) that forms a small, round bump to protect the young insect growing inside. The Galls appear on the leaf surface of […]