How can I overwinter pampas grass that’s been split in zone 5b?

Question

I have sections of dug-up pampas that I’d like to keep until Spring to plant in zone 5B. Is there a way to keep it without planting it & having to dig it up again? Clumps are about 1’X 2′

Answer 1

You can pot them up in potting soil. Then keep them in a frost free but cool area where you can water them well about once a month. Or, after potting them, "heel" them into the ground to give them winter protection.

https://www.gardeningknowhow.com/garden-how-to/info/heeling-in-plants.htm