Sounds like early blight. Glad tomatoes are growing well for you. Next season, spread a thick (3 inches deep) organic mulch around transplants when you set them out. Avoid watering in the evening, too, so that plants are dry overnight and don't foster disease growth.
Sounds like early blight. Glad tomatoes are growing well for you. Next season, spread a thick (3 inches deep) organic mulch around transplants when you set them out. Avoid watering in the evening, too, so that plants are dry overnight and don't foster disease growth.