Blogs

Recent Blog Articles
Trees Videos
looking up from the ground into the sky between tall trees with green leaves

Contemplation of trees

Sitting in the woods, I hear the sound of fall through the voice of the trees. Trees talk in swooshes, crackles and this time of year in a rustle. One only has to hear this distinctive sound to know the seasons have truly changed. As Walt Whitman wrote, “Go and sit in a grove or woods, with one or...
Finish this story

Weather influences foliar disease

The weather can, does, and will influence foliage disease each year, starting in the early weeks of spring. While early spring was a long time ago, many diseases are now quite visible in the home landscape. Ornamental flowering crabapples and apple trees have had...
Finish this story
Bald cypress is an Illinois native plant only know to occur in extreme southern Illinois. While it does wonderfully when planted here is central Illinois, should it be considered native?

How Native is Native?

The term native often means different things to different people.  Most definitions draw a line between geography and time scale which typically is demarcated by the point of human intervention or influence on the landscape. I really like this definition from the Forest Service in 2012, “A...
Finish this story
wound sealer painted on a tree wound

Should we paint tree wounds?

I spend a lot of time asking homeowners to show me their tree butts. Buttress to be specific, but industry lingo shortens it to butt and is described as the dramatic widening of the lower trunk. The buttress of a tree is located beginning at the root flare where the base of the trunk flares out...
Finish this story
This pin oak tree tested positive for bacterial leaf scorch and displays the most distinctive symptoms characterized by brown leaf margins, a colorful band and green tissue along leaf veins.

Bacterial Leaf Scorch Infecting Illinois Oaks

Shade trees are some of the most valuable plants in most urban landscapes.  They provide energy saving shade as well as valuable habitat for wildlife in a sometimes otherwise inhospitable built environments.  However, a mature shade tree takes considerable time to develop the canopy and...
Finish this story

Late summer questions to the Master Gardeners

This time of year, many of the messages coming into our local Master Gardener Help Desks are commonly asked questions that track with our seasonal weather. Here are a few: Q: My lawn has looked pretty good until two weeks ago, what’s up with all the...
Finish this story
photo of downed tree

Understanding storm damage to trees

Strong winds and heavy rains have caused damage to our larger, older shade trees. Wind and rain together provide the “right ingredients” to bring down limbs, especially those that have had structural issues like decay or poor crotch angles, creating included bark which weakens the crotch physically...
Finish this story

The gall of insects (tree bumps and lumps)

Gardeners have been seeing lots of lumps, bumps, and blobs on different kinds of leaves throughout the home landscape, or in parks and the forest preserves. It is not uncommon, as this occurs annually. What is uncommon is the generous number we are seeing this year. These growths are generally...
Finish this story
College of Agricultural, Consumer & Environmental Sciences Illinois Extension

101 Mumford Hall (MC-710)

1301 W. Gregory Dr.

Urbana, IL 61801

Email: extension@illinois.edu

EEO myExtension Staff Login