In Virginia’s zone 7b, I could leave most of my container plants outside all winter. Rake some leaves over pots in a sheltered corner and they’re good till spring. It’s definitely NOT what you want to do where I live in New Hampshire…. zone 5b. I tried my southern method last winter and lost all plants and the pots. I don’t have too many container plants yet as I’m still designing my small landscape… one that involves the removal of trees, a decision made by the residents in our association. Next year I may have an all sun garden and my landscape plan will change accordingly.
My favorite container I designed this summer is a variety of sedum… some bought, some bits being swept up and discarded after cleaning up around plants at work. They’re the easiest plants to root so I threw tiny leaves into the pot when I arrived home from the garden center. Most flourished. Some grew too much and had to be transplanted to the ground.
They eventually merged into one another, blending yellows, greens, reds, and blues. They grew tall. They cascaded over the pot. It was a showstopper and I want to save it. So, today, into the unheated garage the pot has gone. Sitting in the light of a window, I’ll hope for the best for this blend of magic so it can again shine for me next summer.