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 ...

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 ...

Correcting soil pH and choosing the right placement for each plant are just a few of the simple steps that can help bring a ...

Let’s talk about two of the main classifications of plant diseases — biotic and abiotic — and the differences between them. The term “abiotic” means “without life.” Examples include damage from the ...

With the cool, wet weather comes the bane of gardeners — plant diseases. Diseases are generally bad news, whether it’s black spot on your roses, rust on your rhododendrons, downy mildew on your ...

Aster yellows disease: You may have heard of this bizarre condition, or, like me, perhaps you’ve seen it in your own garden but didn't realize it was a disease. The first time I saw Aster yellows on ...

Bad things can happen to good gardeners. Even though you make every effort to follow the general cultural guidelines for the trees and plants in your garden, problems can occur. To help keep track of ...

Researchers from the Hebrew University of Jerusalem have developed an innovative method for the early detection of Fusarium wilt in tomato plants by monitoring subtle changes in the plants' water use.