Plant Diseases

Algal leaf spot disease spores, which are spread by rain, create a big problem for more than 200 plant species, especially plants growing in warm, humid climates. Learn more about this disease and how to treat it in this article.

By Mary H. Dyer

Armillaria root rot symptoms can by sly, starting out slowly with slowed growth and culminating with wood rot and mortality. Recognizing the disease and implementing a process of Armillaria root rot control can slow the disease. More information can be found here.

By Bonnie L. Grant

Cucurbits with angular leaf spot may give you a smaller harvest. This bacterial infection affects cucumbers, zucchini, and melons, and causes angular lesions on leaves and thrives in warm, humid conditions. Learn how to control the problem here.

By Mary Ellen Ellis

Also known as leaf and stem blight, volutella blight is a destructive disease that affects pachysandra plants and boxwood shrubs. Early diagnosis and vigilant plant care are the keys to volutella blight control. This article will help.

By Mary H. Dyer

There is a fungus among us and its name is Fusarium. Fusarium fungus can survive indefinitely, affecting any crop or plant that is contaminated by the soil. Find out how to protect and treat your plants in this article.

By Bonnie L. Grant

When the new growth on your plants starts to wither and die, you know you're in trouble. Read this article to better understand what's going on with your plants and find out if the problem is serious.

By Kristi Waterworth

Diagnosing plant ailments is crucial to plant management and health. Cenagium canker of trees is one of the more insidious diseases. What is Cenagium canker? Click this article for tips on recognizing, treating, and managing sooty bark canker.

By Bonnie L. Grant

Although ‘cherry’ is included in the name, cherry leaf roll disease affects many plants. The virus can affect more than 36 plant families, and cherry leaf roll symptoms and damages are different per group. For tips on recognizing and treating cherry leaf roll, click here.

By Bonnie L. Grant

One of the most common issues for growers is when all plants suddenly start dying. The reason likely has to do with problems with the plant roots. Plant root problems run the range from the most simplistic to more dire explanations. Find additional info here.

By Amy Grant

Nectria canker on trees is a fungal infection. If a tree is healthy, it can typically recover. Weaker trees may get girdled and ultimately die. Know the signs of nectria canker, how to prevent it and what to do if you see it with help from this article.

By Mary Ellen Ellis

Spotting on the foliage of cole crops might just be white leaf spot fungus, Pseudocercosporella capsellae, also known as brassica white leaf spot. What is white leaf spot? Click here to learn how to identify white leaf spot and control its spread in the garden.

By Amy Grant

One fateful day, ‘charcoal’ took on a different meaning when I my cantaloupes had developed charcoal rot. My fond memories of charcoal were just as tainted as my cantaloupe plants. So what is charcoal rot disease, you ask? Click this article to learn more.

By Shelley Pierce

Black rot on cole crops is a serious disease that can decimate an entire crop. How then can cole crop black rot be controlled? Click this article to find out how to identify the symptoms of cole vegetable black rot and how to manage black rot of cole crops.

By Amy Grant

Everyone knows the old adage: April showers bring May flowers. Unfortunately, one disease that thrives in the warmth of midsummer that follows wet spring weather is alternaria leaf spot on cucurbits. Click here for information on leaf blight of cucurbits.

By Darcy Larum

Fusarium yellows of cole crops is an important disease which can cause huge economic loss in commercial settings. It causes wilting and often plant death. Control of cole crop fusarium yellows can help prevent its spread. Learn more in this article.

By Bonnie L. Grant