My narrow leaf milkweed has slowly been creeping across some of my garden in a direction I don't like. So yesterday, I dug them up, cut the tops back but saved all the roots, wrapped them in wet newsprint, and then put them in 3 plastic bags and into the refrig.
What I am hoping is to over winter them in the refrig and then plant the roots in areas where I want milkweed. I had to dig now because the tops die completely back. I'll post my results next spring.