A picture of leaves with leaf spot disease. - Boyloso/Shutterstock Have you noticed discolored spots or lesions on the leaves of your plants? This could be leaf spot disease, and it's wreaking havoc ...

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 ...

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 ...

Take a look outside, and you might see that your crape myrtle’s leaves are turning shades of yellow, orange and red and falling to the ground. Is this a sign that autumn is near? Not quite. This time ...

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 ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. A lilac with pseudocercospora Q • My 30-year-old lilacs are getting lots of brown spots on their leaves, and some of the leaves ...

Your photo and description indicate Septoria leaf spot, which is very common on Rudbeckia and is prevalent in Illinois. The disease begins on lower leaves and progresses up the plant but does not ...

Roses do not have thorns; they have prickles. But there ARE “thorns” in the rose garden. Their names are botrytis, black spot, rust, downy mildew, anthracnose and cerospora leaf spot. They are all ...

Gray leaf spot is also active in the lower canopy at multiple sites across the state. The lesions are light tan in color and generally narrow and rectangular, and can be as long as 2 inches. As the ...

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, ...