Blogs

Recent Blog Articles
Trees Videos
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
The alien-looking fingers protruding from these crabapples release spores that can infect trees in the juniper family to perpetuate cedar-apple rust disease.

Plant Pathogen Spread

Whether its fungi, bacteria or even viruses, one of the most important aspects of plant disease management is stopping or limiting the spread of infectious pathogens.  I have always been fascinated by the way these tiny organisms, rarely visible to the naked eye, make their way through nature...
Finish this story

Watering tips for hot weather

The hot, dry weather we have been getting – and will continue to get – changes how we are going to water the home landscape. Best management practices, or BMP, includes more than just watering (but water is so key to plant survival) and more than just your vegetable plants. Tips for...
Finish this story

How much water does your garden need?

Originally published by Kelly Allsup on July 3, 2020. Last week's high temperatures and our limited amount of rain is making gardeners' number one job watering. Even though we have gotten some much-needed rain for the flowers and the trees, consistent watering throughout the season is...
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