[Silound]

If it gets down to or below freezing, very few plants will survive in pots because the pots are above ground and exposed to the wind and cold more. The roots will freeze, killing anything in the plants. Or worse, those expensive pots will shatter.

Really if you live anywhere that's in the colder climate zones in this country, I think you're almost SOL for potted plants unless you want to invest in a heated greenhouse and other expensive things to help keep your plants alive. We don't grow anything potted on the farm in Ohio unless it's small enough to be moved into the garage during the winter (gas heated garage).