Jasmin...So the "new" thought is that plants actually make the soil they like around them if they have enough time and are taken care of until they can fix the soil. I wonder if you could put a cheap root of a bush peony near your rescued rhoddie and see how they do?
The Alpine nursery that I got my baby TP from says that TP are actually rock garden plants and rhoddies can take dryish shade with lots of mulch...so maybe the acid/base is not as important as dryish?
