There are always green tomatoes left on the vine in the fall. Deciding when to either pick the tomatoes green or let them get hit by frost, is a tough call. And then there’s the problem of how to get them to ripen. Most tomatoes need temperatures above 60 degrees F. to finish ripening and some days can be better than others. But once the days begin to shorten and cool, you are going to need to take some precautions to prevent losing your final tomato harvest. Give your tomato plants a last dose of food. Some compost tea or fish emulsion should give them the energy to finish up the season. Keep reading the tutorial here.