PHC on the Lookout – Leaf Spots Making an Appearance this Fall?

A cool, wet spring often brings increased fungi growth on trees, shrubs and other plants in the landscape. Sometimes the fungus doesn’t become evident until late summer or during the fall season. Brown, black and yellow spots, leaf blotches and distortion, and early leaf drop are all symptoms of fungal diseases. Keep in mind, these […]

PHC on the Lookout – Is There a Fungus Among Us?

Cool, moist early spring weather is ideal for many types of fungi growth, which is exactly what the Chicago area experienced this year. Many commonly used shade trees in Illinois are affected by anthracnose diseases, when weather conditions are ripe for fungi development.  Maple, ash, oak, sycamore and walnut trees are especially impacted, but many […]

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 […]

Tip of the Week – Girdling Root Syndrome

Early fall color and leaf drop, yellowing leaves during the growing season, a thin or sparse tree canopy and a tree trunk that looks like a telephone pole at soil level are all signs of Girdling Root Syndrome (GRS). GRS is commonly found on Maple and Linden trees, but other trees and shrubs in the […]

PHC on the Lookout – Spots on Your Tree Leaves?

Cool, wet conditions are the perfect weather for fungal growth. This is exactly the type of weather the Chicago area experienced this spring and early summer. There are many types of fungi that infect trees. One type is Anthracnose, which is commonly found on Maple, Ash, Oak, Sycamore and Walnut trees. But Dogwood, Catalpa, Linden […]

Tree of the Week – Miyabe Maple

Miyabe Maple (Acer miyabei)   The Miyabe Maple is a medium sized tree typically growing to 30 to 60 feet high and 30 to 35 feet wide. It was brought to this country in the nineteenth century by Professor C.S. Sargent of the Arnold Arboretum. He discovered it by accident while waiting for a train […]

Pests to Watch For – Cottony Maple Scale & Honey Locust Plant Bug

Insect pests can sometimes seem to come out of nowhere.  One minute everything looks fine, the next minute your tree is looking differently than it did before.  In many cases, the pests are controllable and your tree will be fine with the proper treatment.  All insects have cyclic populations, meaning some years there may be […]