My biggest tomato plant is turning yellow, with no buds on it. My smaller plants are doing great though with small green tomatoes on them. I'm so confused. What is going wrong?
Could be a variety of issues. The bottom leaves will yellow as the plant gets bigger because they get less nutrients as they're shaded by the top. If you have caterpillars or bugs, it can cause the plant to yellow. If your soil is low in nitrogen, it causes yellowing as well.