Tomato plants in home gardens in and around Blair County are showing signs of late blight, horticulture educator Tom Ford with the Penn State Cooperative Extension said.
No potatoes or commercial operations have yet been affected, but smaller gardens in Blair, Indiana, Beaver, Cambria and Somerset counties have all shown signs of the disease, Ford said.
While recent hot, dry weather can keep late blight from forming or spreading further, the expected cool, moist forecast for evenings could cause the blight "to explode," Ford said.
Gardeners and farmers need to be proactive by spraying crops and watching for the disease.
