There is a disturbing article out of Rodale, the publishers of Organic Gardening, that tomato blight has been confirmed in several states. For tomato growers, both farmers and home gardeners, this is no small thing. This is the same disease that caused the mid-19th century Irish potato famine.
I suggest that you read Rodale’s article and do exactly what they say if you find symptoms of tomato blight in your own garden.
I am not sure that the photos taken in my garden this afternoon pictured here show evidence of tomato blight. I will research it further. In the mean time you might want to take a look at the Rodale article and then take a look at your tomato plants.
An Update Today…
I’ve come across a pretty good video for those wishing to identify late blight. This piece filmed last year for the University of Wisconsin – Madison is helpful in not only the description of late blight but also has information as to how to destroy the plants. Not all options given are organic but information for organic growers is offered. -Bill