Aug 7, 2009 
Home gardeners and commercial tomato producers in the Eastern and Southern US face a potential tomato crop failure this summer. The problem is called late blight and is caused by a fungus.
What are the symptoms?
There are several different fungal diseases of tomatoes, including early blight and septoria leaf spot. But no other fungus has the specific combination of symptoms on leaves, stems, and fruit that identifies late blight. If your tomato plants have all three of the following symptoms you can be sure you are dealing with late blight.
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