My tomatoes grew into one very large mound. They were planted around 1.5 feet apart. Obviously, this was not far enough apart. Because of the horrific drought we are experiencing here in California, I water judiciously, usually once per week of deep watering. The tomato plants still grew very well. I may cut back the watering even more once I see more fruits developing. We'll see. For comparison, here is a photo I took earlier this month.