Answer: Sounds like you have the green thumb for tomatoes! Tomatoes are treated as annuals in climates where frosts kill them, but they will live longer if they are protected from the cold. But most modern varieties aren't bred for longevity, but only produce well for the first season. So you'll do better to start some new plants from seed soon, transplant them into pots, and keep them in your sunroom. Tomatoes need at least 8 hours of intense sun to produce blooms and fruit, so you'll need to use supplemental lighting to keep them in production during the winter. High-intensity discharge lamps (HID) are recommended, though they are expensive. You'll have to do a cost comparison to see if it pays to grow your own or purchase vine-ripened tomatoes at the market this winter. Alternately, you can try regular flourescent grow lights or spot lamps, though they tend to lack the intensity necessary to promote fruiting. Here are some suppliers of HID equipment: Worm's Way - http://www.wormsway.com; Harvest Moon Hydroponics - http://www.hmoonhydro.com; Charley's Greenhouse Supplies - http://www.charleysgreenhouse.com
Grow container varieties of tomato, since they are best adapted to growing in confined spaces. Best of luck!
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