Depends... are you able to keep them indoors? or protected from the outdoors? Or did you want to get them in the ground before the cold sets in? Also, if the boo your wanting is still shooting, you'd want to wait because its very likely that you'd loose those shoots during the transplant. just my 2 cents :)
Blessings

Hi! No, the boo is hardy to zone 5 and stopped shooting awhile ago. I'd love to get it in the ground before cold weather sets in. I might try to dig up a big part of it and see what happens.