Invasive Species

If there is one certainty for all humans is that we are drawn to natural elements. Two of the best examples are how we can become transfixed when looking at fire or water. Scientists have studied this effect and shown that our brains reduce stress chemicals when we are staring at a fire, water, or...

If you’ve driven along any interstates or highways in Illinois, there’s a good chance you’ve seen tall plants with spiky flower heads. Teasels have become an increasingly common sight across Illinois. While they may appear attractive, especially for cut flower arrangements, these troublesome plants...

We are stuck with the trees planted by those who came before us. At least I am at my house. Mostly because they are so expensive to cut down. One species I am left dealing with is Norway maple (Acer platinoides).Am I referring to the maple with purple leaves? Yes, that maple. The original...

The other day, I had the opportunity to chaperone a school group at a local state park. While on the field trip, a volunteer-led the students on a nature hike through the woodlands. At one point during the hike, the group leader grabbed a handful of two plants to share with the students but in...

Callery pear (Pyrus calleryana), better known as ‘Bradford’ pear, has been blooming across Illinois. Over the years, it has been a popular tree to plant, especially in residential areas. Trees will reach 30 to 40 feet in height and produce numerous white flowers in the spring. Trees also...

Two separate serendipitous events occurred recently that brought a plant back to the forefront of my attention. First, a few weeks ago a colleague asked me to confirm the species of a tree growing near a public garden. The garden was struggling to grow, and a cursory identification of the tree...

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...

Working for Illinois Extension I get to travel quite often, mostly throughout west-central Illinois. And 2021 has brought a significant decline in ash trees in this area. The Story of EAB Emerald ash borer (EAB) is a non-native insect that attacks healthy ash trees. EAB is nothing new. I have...

How full is your invasive species radar? All I can say is my view is overwhelmed. Dealing with the current group of Japanese beetles, emerald ash borer, bush honeysuckle, and so many more. Plus, in Illinois, we are girding for the impending arrival of the very destructive spotted lanternfly. Then a...