I live in Texas, although winters are mild here, we tend to have a handful of days below 0. I have a raised garden that is 6x6 and 2ft deep. It contains a tomato plant, 4 jalapeno plants, and 2 serrano plants. What can I do to protect them from the winter?
Preparing My Vegetables for Winter
Certified GKH Gardening Expert
You could try hoop houses or some other form of temporary greenhouse enclosure over the plants, but to be honest, they really don't do well in temps below 50F and will die if exposed to temps under 40F. Even with a structure over the plants, it is unlikely they would survive the nights where the temps dipped below 0F.
These plants are treated as annuals. You can however pre-plant seeds for next year, which would result in earlier fruit. This article will explain more: