If watering deeply hasn’t helped, wilted leaves could be a sign of one of primarily two issues: a fungal infection, such as Verticillium or Fusarium wilt, or walnut toxicity. If your tomatoes are less than approximately 75 feet from the walnut trees, then the latter is likely the cause. In either case, there’s not much you can do aside from planting the tomatoes in a different spot next year.
If watering deeply hasn’t helped, wilted leaves could be a sign of one of primarily two issues: a fungal infection, such as Verticillium or Fusarium wilt, or walnut toxicity. If your tomatoes are less than approximately 75 feet from the walnut trees, then the latter is likely the cause. In either case, there’s not much you can do aside from planting the tomatoes in a different spot next year.