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Potatoes like cooler soil so they do well in my basement garage. I have started using full spectrum, 85 watt compact fluorescent bulbs They don't use a lot of energy and last way longer than incandescent grow bulbs and only cost a couple of bucks more than incandescent. 1 bulb will work for a 4'x 4' area. The major drawback with multiple buckets of potatoes indoors is that they take up space for 90-180 days and since I haven't figured out how to water them when I'm traveling (I shut off the water for the house before leaving) I have to start from scratch every time I know I'm going to be away for more than a week. <sigh> The tomatoes, peppers, squash, cabbage, carrots, onions and whatever now get planted in DIY earthboxes that have a water storage area. They only need watering once a month or so. I could plant some potatoes in the earthboxes, but the time I experimented with that, a lot of the potatoes ended up growing in the water storage area and rotted. That was a mess.