Mills, if the roots are going to be replanted I think the moss w/ light bleach solution may work, but would be concerned that the refridgeration may cause a year of dormancy. If they are for consumption my fear would be that they would take on a bleach flavor. The only thing I have tried personally is burrying them in the ground, and it does work well but you will lose a little weight, and like I said that isnt really feasible w/ large quantities. Unless you have access to a backhoe, then perhaps... if you could keep what youre doing under wraps.