Gray leaf spot is a widespread fungal disease in corn, responsible for a 23-million-bushel yield loss in the U.S. in 2024. 1 The challenge with controlling gray leaf spot isn’t just deciding whether ...

GOLDEN VALLEY, Minn — Many of you have noticed your lilacs aren’t looking so great this year. The problem we’re seeing is Leaf Spot, a fungus that starts off as brown spots on the leaves and then ...

Purdue Landscape Report: Aspen, cottonwood, and poplar are all names for the fast-growing Populus tree species. Used widely for building materials, these trees are often located around ponds, ...

Tomato leaves will begin showing signs of leaf-spot diseases soon if they haven’t already, Kansas State University horticulture expert, Ward Upham said. Brown spots on the leaves indicate Septoria ...

Here's how to keep your hydrangea foliage looking green and healthy. In late summer or fall, Cercospora fungus causes brown spots on hydrangea leaves. The plant looks unsightly but usually recovers ...

Fungi are the most common causal agent of plant disease. Of the more than 2 million species of fungi worldwide, 8,000 are known to be detrimental to plants. These microscopic organisms cause symptoms ...

Q: Sections of my St. Augustinegrass lawn are looking bad. I’m seeing spots on individual blades with some blades withering up and dying. Is this a fungus? A: What you’ve described sounds like gray ...

There are two common types of leaf diseases on English ivy found in Illinois. One is caused by fungi and the other is caused by a bacterium. Both diseases can cause defoliation if severe, but your ivy ...

Brown spots on hydrangea leaves and flowers are rarely fatal to hydrangea plants. However, these unsightly blemishes can impact the look of your hydrangeas and they may signal that your plants are ...

In late summer or fall, Cercospora fungus causes brown spots on hydrangea leaves. The plant looks unsightly but usually recovers from the disease. Drip irrigation, good air circulation, and removal of ...