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 […]
Tree of the Week – Hackberry (Celtis occidentalis)
The Hackberry is a large tree, similar to the Elm and grows 50 to 60 feet tall. Because of its’ vase-shape and rounded crown, the Hackberry makes an excellent ornamental tree for both street and landscape use. It’s often used as a shade tree in urban environments due to its size and stress tolerance. The […]