Niobe totally shaded, needs moving. Advice?
My 12-year-old Niobe clematis used to bloom fairly well, climbing up a New Dawn rose and behind several short (at the time) hollies and evergreen shrubs. Now that the shrubs are bigger (and I want them to be big), the clematis is getting shaded out. This spring Niobe started all over with new tender shoots from the ground. The old woody stem may have been torn off during extensive rose pruning. So it's time to move Niobe to a better location.
My questions: can I move it this month? or should I wait til fall or winter? Should I put it in full sun? About how far down and wide will I have to dig, to get the whole root system?