When to Harvest
Fruit that is fully ripened on the vine has a much fuller flavor than fruits that are picked early and then allowed to ripen. Many cherry tomatoes, however, have a tendency to crack if they stay on the plant, so they should be picked at the peak of redness, or even a tad before.
When daytime fall temperatures are consistently below 60 degrees Fahrenheit, fruit will no longer ripen on the vine, so it is time to bring all mature green fruits indoors, either on the vine or off (see Ripening That Huge Crop of Green Garden Tomatoes).