I just planted all my things in cardboard boxes and set them in bright shade. They ended up over wintering this way, most out of the ground a year now. Problems w the roof/siding project, material sourcing ect delayed the project over the winter and it still isn't done. I didn't lose much, looks like most things are coming back. Cardboard touching the ground of course has rotted out, no bottoms now. But the sides are still intact holding things together, going to refreshen things though since they will need to stay in there a few more months.
