I have some sweet potatoes I harvested this fall in storage in my basement.

They look like they’re in really good condition, but the temperature got a little colder than is recommended. Normally, this area of my basement runs around 56 to 60°F. But after a couple of single digit nights and a lot of wind, this morning, the temperature down there was 52.

Is that cold enough to cause damage to them? I’ve read temperatures below 55 can cause some kind of hardening of the core.