Tomato plant
From Self-sufficiency
Saving the plants from frost
When the first frost comes, if you still have tomatoes coming along, here's a very easy way to save them.
No need to wrap each one in newspaper. If you have a dry basement or other unused space that will not freeze, simply pull up the tomato plants roots and all, shake off the dirt and hang them upside down so that none of the leaves touch the floor. The tomatoes continue to ripen very slowly, they do not rot, and you can easily see which ones are ripest without having to unwrap a bunch of newspaper.