I wish I had a good place to start seeds over the winter. I sectioned off a corner of covered/screened porch type area I have with clear plastic to put some things to protect over the winter. It kept the frost out, but not the freezing temps. All my smaller aloes, the dragonfruit plants I'd started, and a few other things froze and died. I'm not sure if my keylime is going to make it or not. We are planning on building a greenhouse and I intend to make it somewhat insulated to keep from getting too hot in the summer and protect from freezing in the winter. Eventually we'll get to that...
I'm so glad I got everything in the ground that I wanted to, though, because this rain we are having right now should really encourage them all. Plants always like rain water better than hose water....