With apologies, I just sent this request and noticed after I hit send that I had messed up my email address. These are two potted Sungold tomato plants. The leaves are yellow. They are pot it in a mixture of organic potting soil, and Leafgro. I water every day unless it rains and fertilize every other week with a standard vegetable fertilizer. Why do the leaves keep turning yellow? There is a third potted Sungold in the same area as these and its leaves do not turn yellow.