>> Tomatoes just start to get fruit and we get a frost.
My 'Stupice' tomatoes lost all their flavor when I had a few nights a row that were cool - maybe 50 or 45?
They had been pretty good before that, and I saved a few on the vine for a friend's visit. gave her one, she bit into it and spat it out it was so bad. She thought it must have gone bad, but just had no sweetness and little tartness. Kind of like oatmeal or cardboard.
The Sungold cherry tomatoes survived that cold spell and kept going for another few weeks.