Problem: Powdery mildew leaves a telltale white dusty coating on leaves, stems and flowers. Caused by a fungus, it is a ...

When we notice a plant problem, the instinct is to grab a pesticide spray. That's not the answer; it's critical to find out first what the problem actually is. Diagnosing what's wrong can be ...

Plant diseases limit the output of agricultural workers and cause hundreds of billions of dollars in global crop production loss each year. When plants get wet they are at risk of contracting diseases ...

Above: Hosta with symptoms of leaf spots and necrosis. Do your landscape plants have cankers, mosaics, galls, mummies, or witches’ brooms? These and other symptoms are often hard for the average ...

Plants have an immune system, like people, and when it is triggered by threats like disease or pests, a plant's defenses are activated. But there's a downside to this protective mechanism: the plant's ...

Plant diseases don't stop at a nation's borders and miles of oceans don't prevent their spread, either. That's why plant disease surveillance, improved plant disease detection systems and predictive ...

Plant diseases occur in most gardens. Many happen on a yearly basis, others sporadically. Why disease occurs often is dependent on weather. In fact, there are three conditions that must exist for a ...

Scientists found a way to help plants grow while staying disease resistant, a discovery that could improve food production.