Illinois Extension is a resource available for all community members. We work hard to help residents find answers to burning questions, and solutions to challenges, and keep current on industry and university research. We provide education and outreach through a variety of outlets- this article is...

The problem with many plant diseases is once you notice them it’s often too late. That’s especially true with our trees. We often don’t gaze at the canopies of our trees looking for problems. The typical homeowner won’t notice disease or insect damage until visible symptoms surpass 10 percent of...

Balled and burlap trees: Remove the burlap April is arbor month and April 28, 2023, is Arbor Day. This is a day inspired by the multitude of benefits trees provide, the desire to have more trees in our communities, and a call to action to plant trees on this day. I have spent my entire career...

While spring-blooming bulbs get much of our attention in the spring, flowering trees shouldn’t be overlooked. One of the best trees for spring color is the adaptable eastern redbud (Cercis canadensis). Flowering redbuds are a sure sign that spring has arrived. What do they...

Apples and pears are popular trees to grow for people interested in growing their own fruit. However, they aren't without any problems. A variety of insect pests and diseases can plague them. One common and potentially serious disease is fire blight. What is fire blight? Fire...

I write this article as I look out at a snow-covered landscape and give thanks for the warmth of my office. It is during these days that I’m reminded of the awesome adaptability of nature. Trees and animals can survive, even thrive, in a climate where temperatures can easily span one-hundred...

By definition, a forest is a large area of land covered with trees and understory growth. Traditionally, these parcels of land are often imagined as plant-dense woodlands with a diverse mix of species layered from tall trees down to mosses on the woodland floor. These plants are growing where seeds...

Lessons learned: Bald cypress is a tree to know Don’t you wish you knew then what you know now? Speaking from experience, when I first began studying plants, people would ask me lots of gardening or landscaping questions. Did I as a first-year student know the answer? No. Did I pretend to? Yes. It...

While traveling through the Midwest on leaf peeping adventures, modern day explorers may find a rather nondescript tree with unique, distinct fruit. A medium-sized tree adorned with large, round, chartreuse colored fruit can be easily identified as Maclura pomifera, or Osage orange....

Many years ago, when emerald ash borer (EAB), had just arrived in northern Illinois, a colleague came across a flatbed trailer loaded with cut ash trees at a gas station. At that time Illinois counties confirmed with EAB had a quarantine that restricted moving ash wood outside of the county. Most...