I have a small veg. garden in my back yard. I've planted 2 tomato plants. A Bonnie Roma and a Bonnie Original. Starting from the bottom of the plant, the leaves are turning yellow around the edge then are drying to a crisp brown and then wilting. I usually water with Miracle Grow Bloom Plus in the morning twice a week. I am very uneasy about treating with pesticides and such. My location is So. Indiana. Hot and Humid! 90 deg. 90% humidity.
I am getting fruit, especially from the Roma, soon to be more than I can handle. The plants are both over 4 ft. tall and have a healthy bluish green color to the leaves at the top 2/3 of the plant. I have not seen any ants, or enough to raise concern. I can't see any black specks on the back of the leaves. What can I do?