If you take a close look at some of the more established trees in your landscape, you may notice something you cannot seem to describe – it may look to you like a kind of fungus on your tree trunk. Is ...

A destructive fungal disease that kills native trees within weeks has appeared outside the Southern United States for the ...

California almond growers have been plagued by canker diseases that have caused yield and tree losses for years. Yet some mysteries remain about what causes them and how to diagnose the problem. Those ...

Mushrooms commonly grow in lawns and gardens; you've likely seen mushrooms cropping up on your lawn after a long period of rain. Mushrooms are the visible fruiting bodies of fungi. They provide an ...

An invasive fungal plant disease has been discovered on Long Island, its first appearance outside the South, the state ...

Q: I recently noticed a black, tar-like patch on my tree trunk, though it’s not tacky like actual tar. Are these insect eggs? Dried sap? Do I try to scrape it off? The tree has lichen but I don’t ...

The tree killing fungus Phellinus noxius is widely known to cause Brown Root Rot on trees in both urban and forest areas. Last year, Dr. Robert Schlub, Extension Plant Pathologist, posted an article ...

In most Chicago suburbs, you can’t drive a block without seeing a spruce tree. Norway spruce, blue spruce and white spruce are among the most popular trees in the area, prized for their winter color ...

An interesting amber-colored mushroom is showing up in many gardens. It’s actually kind of pretty, but it’s scaring some folks, especially when tree care companies and arborists report that it is ...