Question: Can I successfully carry my spring tomatoes through the summer for a fall crop?
Answer: Everybody has an opinion on this one. It’s usually far better to replant with fresh transplants for the fall crop. Late June, July and August are brutal for tomato plants that have just gone through the rigors of producing spring fruit. If you insist on hanging onto the old plants for those 8 or 10 unproductive weeks, at least compare your fall crop by planting new transplants at the prescribed time.