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Tree Fruits

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...
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a black walnut tree

Black Walnut

Anyone with a mature black walnut (Juglans nigra) on their property is likely aware that fruits are ripe now, and the baseball-sized, green bombs are beginning to fall with each slight gust of wind or, at times, seemingly at random. This native tree is prevalent throughout central...
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Pawpaw

Spring is a time of swelling buds and wildflowers in Illinois forests.  However, the flowering display of some plants may be overlooked if you aren’t observant.   The tiny, indiscrete flowers of pawpaw (Asimina triloba) are often unnoticed by humans since they appear in...
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