Can you overwinter tomatoes? If you can, what is the process?
Certified GKH Gardening Expert
the only way this can happen is that the temperatures remain above 50 degrees. They will almost stop growing completely below this. The other alternative is to keep them alive indoors. I always root a cutting of a tomato variety that I like, and keep it inside under My LED horticultural light until it is warm enough to plant. You will need at least 200 watts to keep them alive through winter. The more, the better. They produce fruit under mine, but it is 750 watts.
Here is an article for more information: https://www.gardeningknowhow.com/edible/vegetables/tomato/growing-indoor-tomatoes.htm