There are a lot of myths and apprehension attached to this pastime. The basic rules of rose pruning are really simple.
- Remove any diseased or spindly growth.
- Remove any branches that cross over other branches.
- Prune to buds - slightly above the bud at approx 45 degree angle sloping away from the bud so the cut finishes in line with bud.
- Aim for a well-shaped and open bush or shrub.
- Usually remove one quarter to one third of the last seasons growth.
- If you are trying to maintain the bush to a certain height then work on replacing old wood with new current season's growth.