These are some tough plants! I ordered and received some comfrey roots from Ken Grunke last November and was very happy with the package I received. However, before I could get them planted we had a change of weather so I put them in our spare refrigerator to hold them at least somewhat dormant. And promptly forgot about them. Almost four months later I remembered them and put them in some potting soil but didn't really expect much to grow since they had been without water or soil for so long. It now looks as though every single piece of root has sprouted! If you are looking for comfrey starts, I can certainly recommend these.
That is totally awesome. I have never stored roots that long out of the ground, so that is encouraging.
Almost time to start digging again, the ground is thawed but I'm waiting for little shoots to come up so they will have some life in them when I ship 'em. Hopefully by this weekend, the forecast looks warm and sunny. The pickings are getting slim however, so this might be it for a couple years.
