Is tomato leaf blight serious?

Yes! Tomato leaf blight is a serious disease in tomatoes. It is caused by a fungus and typically occurs in an environment of high humidity and temperatures around 68 degrees. Some strains of tomato leaf blight are able to tolerate higher temperatures. In Nevada, it is important to watch out for tomato leaf blight because it has the potential to cause severe economic harm to the potato industry. Gardeners who discover tomato leaf blight on their plants should pick off affected leaves if the infection is mild. Leaves should be sealed in a plastic bag and left to bake in the sun for a few days before being thrown away. Gardeners with severely affected plants should destroy the plants completely. In doing so, they will protect crops growing nearby from being infected. Fruit from diseased tomato plants can be eaten, but not canned. No parts of infected plants should be composted! For more information, read University of Nevada Cooperative Extension Carson City/Storey County Extension Educator JoAnne Skelly’s article “Watch for Vegetable Problems.”