What is too hot for tomatoes?

Q: My tomato plants are lovely and blooming. Some of the fruit has set. However, our nights are turning warm, and I am getting worried. What is the hottest temperature that the tomatoes can have and still set fruit? A: I am going to paraphrase an answer from Dr. Jerry Parsons, a retired Extension Horticulturist, in his column PlantAnswers.com. He says that tomato blooms drop off because of a type of pollination problem. The plants are hermaphroditic with the male and female parts in the same flower. If the flower or pistil is inactivated because of hot temperatures or made... Article Link