Here are symptoms of late blight on tomatoes. If you think you have this disease on your tomatoes, please contact the Cornell Cooperative Extension Office in your county so they can take action. Photo courtesy Cornell Vegetable Program Late blight, a devastating disease of tomatoes and potatoes, has been detected in northern Pennsylvania (Erie County, Pennsylvania). If you see it on your plants, please contact the Cornell Cooperative Extension in your county. Late blight is best known for causing the Irish…

