Hi Michelle. For what it's worth, I've grown several varieties of tomatoes in five gallon buckets this year and none of them seemed to run out of room in the pots. All of the tomatoes I planted in the spring reached at least ten feet tall, most around 12 to 14 feet. A cherry tomato seems to be about 18 feet tall, although it fell over in hurricane Floyd and doubled back on itself, so I'm not sure. I'm still getting lots of tomatoes every day, so I haven't pulled up most of the plants yet to examine the roots. The ones I have pulled up, were in no danger of outgrowing the buckets. You might consider growing some of the bigger varieties anyway and see how they do for you. I asked about root size on another newsgroup and the conclusion seems to be that roots grow as big as they need to to get the food they need. Has anyone here had experience with their bucket tomatoes running out of room for the roots? --Michael