Zone 7a, Kentucky USA. I read about over-wintering peppers and tried it out last year, but sadly none of them survived. I pruned them appropriately, and kept them in my garage with infrequent watering once temperatures started getting into the 40s at night. We had wild temperature fluctuations (high 60s F during the day and low 30s F at night) and I’m not sure if that hindered the process.
I would love to try again this year, but I’m wondering what others’ experiences are.
My chili pequin planted in the ground comes back each year in 8a, but it's native here.