A couple of months ago, I posted here asking about storing sweet potatoes and got several interesting suggestions. We ended up treating them like the regular potatoes, storing them clean and dry in old milk crates, those plastic boxes with fairly open sides to allow air circulation. They've been out in the laundry room, a room without a radiator tacked on the south side of the house. It's a bit chillier out there as the only heat is what drifts in from the rest of the house. We're in Maryland so it's fall here.
The sweet potatoes are holding up perfectly. No spoilage or rot noticed yet. My wife serves them regularly at dinner and they've kept their color, texture and flavor.
Paul