Doubtful you'll find any takers on digging up an established climber, especially here in Michigan. I doubt that even if you did that it would do that well being dug up and transported. Now, if you are willing to shell out about $50, I do know of a place selling potted, 3 year old climbers (Dublin Bay and Westerland for sure) in the Belleville area. I have a few roses, and really clay soil also. Just dig a hole twice as wide as the rootball and twice as deep, and amend the soil, but not with topsoil. Use a garden soil and the cheap manure/compost at Home Depot (probably closest to you is the M59 & M53 store).

One last item. We live in Michigan, so climbers have a tendency for dieback here. I get some dieback on most of mine, but by summer they are busting out with blooms. Do not get caught up on trying to find a huge one to start off with, and most importantly, DO NOT buy one from a place like Wiegands, etc unless you first find out here how it will survive our winters. Most of the climbers out there will fare pretty poorly.

Here is the link to the rose nursery in Belleville. It is the best in Michigan, and one of the best in the U.S.

You can email me, or post here with any other questions.

Here is a link that might be useful: Great lakes Roses