Planting tomatoes with the Hatfield Transplanter from Johnny’s Seed. Video Rating: 5 / 5 Question by Judith: Why are my tomato plants not producing tomatoes? My 3 tomato plants have lots of leaves and are quite tall (about 5 feet so far). The leaves are healthy and green. Problem is, very little fruit. I have cherry, zebra and better boy plants. Other years by now I’ve got bumper crops, but not this year. Any answers? Best answer: Answer by Jimmygood luck What do you think? Answer below!