I grow potatoes in Smart pots every year. I store them (with their soil) in big trash bags over the winter and leave them outdoors. In the spring, I fluff, add extra soil and fertilizer as needed, then replant. That being said, I've not had disease issues that I've had to deal with.
But, the Smart pots hold up really well. Most of mine are now 5-6 years old, and showing no signs of breaking down.
