How to Prevent and Manage Aster Yellows

You nurture your tomato plants until you have beautiful fruit maturing on the vine.Upon closer inspection, you discover that somet

Late blight is a serious disease that may affect tomatoes and potatoes. It can rapidly destroy entire fields and ruin a farmer’s income for the year. And it may affect crops in home gardens severely as well.You may not realize it, but you are probably already familiar with the

Rusts are fungi that will not kill their hosts, although they sure make them suffer. There is even a term for pathogens that require living hosts: biotrophs (in contrast to necrotrophs, pathogens that kill their host and live off the dead tissue).Think Gloria Gaynor – your plants will survive! However, repeated infections of this pat

Gummosis refers to the oozing of sap or gum from a tree. This behavior is very common on stone fruits, including apricots, peaches, and plums.You can look at gummosis as your tree’s cry for help in the face of any one of a number of problem

Peace lilies, Spathiphyllum spp. are easygoing houseplants that seldom suffer from disease issues when provided with the right care.In fact, they are so easy to grow that Dr. Leo

While the name Phytophthora might not mean much to you, these organisms are a menace to agriculture and forests alike.The name is derived from Greek and tells you what you need to know about them:  p

While powdery mildews don’t kill their hosts, they sure do a number on them. And that is particularly true for powdery mildew of apples and crabapples, caused by Podosphaera leucotricha.This pathogen attacks both cultivated and wild apples

In the 1880s, a new disease decimated vineyards in the Los Angeles basin. California’s first professional plant pathologist, Newton B. Pierce, studied the disease and was rewarded with its being named after him.More than a century later, Pierce’s disease is still a major threat to vineyard

If your tomato plants have enormous flower buds and little or no fruit develops, you should examine them more closely to see if they have the aptly named tomato big bud disease.While this disease can be a severe problem in subtrop

If you’re growing pumpkins in your garden, you may have seen white spots appearing on the leaves and vines.What’s up with that? It’s likely that your plants are i

Bacterial diseases of turnip leaves are very serious infections.There are no highly effective controls for them, and once they have infected a field, the diseases can quickly spread throughout a whole field an

If you think amaryllis flowers bring a special sparkle to the holidays, you are not alone!The word amaryllis actually derive