amending soil under rose
I just bought a house and now have a few climbing roses on a trellis that are doing very poorly... soil under is about 1/2 pea gravel and 1/2 red thin soil. I don't want to dig the roses up since they have started growing up the trellis, but want to amend the soil. Would it be best to carefully rake out soil around the roots as deep as I can and add good soil around it? Or would lifting the root ball up and sort of propping it to the side while I dig out all the gravel and add good soil be wiser since even if I damage the roots some at least it might save the plant in long run.