They moved us from 4B up into 5A, or even 5B, but that isn’t working too well.
We try for Zone 3 of 4 hardiness for any non-annuals. This past winter, though, we were down into 3B territory.
I am thinking more than ever, that an attached green house is going to have to be in our future here, especially if the winters keep being so cold.
Or even a “sun porch” with windows all around on three sides, and regular roof, or maybe just one row of clear panels as a boundary over the windows.
I could open the patio doors and walk right into the area. Grow some tall columnar fruts and loads of spinach, tomatoes, etc. All the stuff that is expensive in the grocery during the winter.