Helga George, PhD 
Not sure what’s plaguing your tomatoes? Our roundup of common tomato plant diseases can help you to identify, treat, and prevent a variety of fungal, bacterial, and viral ailments, as well as other issues that may arise. From Alternaria stem canker to Verticillium wilt, we’ve got you covered. Read more now.
Do your cabbage plants appear diseased? An array of organisms can afflict cabbage plants, ranging in severity from powdery mildew, which generally does not kill its hosts, to bacterial soft rot, which totally decimates them. Read on to figure out which pathogen has infected your cabbages and what you can do about it.
While the American hazelnuts grown on the East Coast are resistant to Eastern filbert blight, this disease can be devastating to the prized European cultivars commonly grown in Oregon and Washington State. Ready to learn how to identify, prevent, and manage this potentially lethal disease? Read more now.
Three types of aggressive microbes can cause tomato blight. Early blight and Septoria blight are fungal diseases, while late blight is caused by a water mold. The symptoms of these diseases all differ slightly, and this guide will show you how to prevent, identify, and treat these insidious infections in your crop.
Excessively large green tomato buds that do not develop into flowers can be a sign that your plants are infected with tomato big bud phytoplasma. This disease is incurable, so your main focus should be on prevention. Read on to learn what to look for and how to prevent this disease from infecting your tomato plants.
Catfacing of tomatoes is a physiological disorder that causes deformities in the developing fruit, caused by stressful cultural conditions. Steps you can take to prevent this condition include planting resistant varieties and ensuring your plants are not subjected to cold weather. Read on to learn more about catface.
Sclerotinia stem rot, or white mold of tomato lives up to its name causing brittle dead stalks filled with fluffy white clumps of fungus. This disease frequently kills tomato plants, and the fungi can live in the soil for up to a decade. Read on to learn how to recognize the symptoms and prevent it from spreading.
Gray mold on strawberries is a disease caused by Botrytis that is very common throughout the world, and difficult to control. The fungus is even resistant to most fungicides. Read more now to learn what steps you can take to control this potentially devastating fungus, and prevent it from ruining your harvest.
An alpine meadow perennial, azure monkshood produces stunning purple-blue flowers and distinctive green foliage in the fall garden. This plant is disease resistant, and relatively easy to care for. Keep it moist, and it should bloom reliably in the fall. Read on to learn how to grow this late season gem now.
Hydrangeas can fall prey to anthracnose, a virulent fungal disease which can cause damage to the leaves, flowers, and even the stems. This fungus spreads quickly in hot, wet weather, but there are steps you can take to limit an infection. Read on to learn how to prevent, diagnose, and manage anthracnose in hydrangeas.
Tomato plants are commonly infected by a fungus that manifests as spots shaped like bull’s-eyes on the leaves and fruit. Your plants are likely to have early blight, caused by the fungus Alternaria. This disease is not usually fatal, but it can ruin your harvest. Read on to learn how to manage this ubiquitous disease.
As a close relative of black walnut, pecan also produces the strong toxin juglone. This toxin is poisonous to people, animals – and plants. Its presence can make it impossible to grow some kinds of plants under these trees. Read on to learn about juglone in pecan trees and how to work around it.
Despite their use as a medicine in previous eras, all parts of hellebores are toxic if eaten by children or animals. Key symptoms include diarrhea, vomiting, and convulsions in serious cases. Read on to learn what to do if your dogs, cats, or horses ingest hellebore and to learn more about the poisons involved.
Aster yellows can infect more than 300 species of plants and produce symptoms such as leaves growing out of flowers and other deformities. Read on to learn how to spot the various symptoms of this disease and manage the aster leafhoppers that transmit it.
Some types of fungi have developed resistance to a number of the fungicides used to control them. However, by knowing how these compounds target the fungi, we can develop a plan to vary treatments and alternate between different types, making resistance much less likely. Read on to learn how to rotate fungicides.
Raspberry fruitworms eat the leaves of raspberries and blackberries, and their larvae infest the fruit. Since this can lead to a very unpleasant surprise for consumers, it is fortunate that there is a range of control options. Gardener’s Path will train you how to monitor your populations of these pests and control them.
Ripening tomatoes sometimes develop a dark, sunken spot at the blossom end, known as blossom-end rot. But this damage to your crop is not a sign of disease – it’s due to a lack of calcium in the fruit. Read on to learn about the measures you can take to keep your tomatoes safe from this physiological disorder.
Sex appeal comes in all shapes and sizes, but in insects, it’s often rooted in trace amounts of a pheromone. Gardeners and growers use this to their advantage by luring and trapping the males or preventing them from finding their mates. Read on to learn how to use these hormones to control pests in your garden.