Indiana is the latest state to report confirmed cases of late blight.

Infected tomatoes have been found in Tippecanoe, Vermillion, Bartholomew and other counties in Indiana, according to a news release from Purdue University.

Purdue extension plant pathologist Dan Egel said confirmed symptoms have included nickel-sized (or larger) olive green and brown spots on leaves, with a fuzzy white fungal growth on the underside. High humidity has been the culprit.

Also, Egel said, firm, brown spots have been found on some tomatoes themselves. Growers who identify late blight should plow under or pull out and destroy infected plants, he said.

Egel said he hasn’t seen late blight in Indiana since 1998, when it was found on potatoes in Knox County.

The most recent updates on blight in Indiana can be found on the Web site of the Purdue Plant and Pest Diagnostic Laboratory, at

Earlier this summer, late blight was confirmed in tomato and/or potato plants in Virginia, New Jersey, New York and other East Coast states.