We planted a few tomatoes very early for television reasons. Over the weekend there was a frost warning, so we had to cover them up to protect them. Because the only time I could get to the garden was the middle of the day, I did not want to use plastic because the plants would have been cooked in their little greenhouse. So I used a piece of fabric we had laying around. I put stakes in the ground by the plants to keep them from getting crushed and held the fabric down with stones and bricks we had lying around. Before I covered them, I watered using cool water. Water holds a lot of heat that will be released as the temperature drops. It worked and the plants are still alive. The forecast looks clear of frost for the next week or so, but we need to watch it closely. We are still two weeks from the average frost free date here in Memphis.
Looks like they came though just fine. We'll be ready if it gets cold again.