and how to prune rose bushes in winter?
If your rose bushes are healthy and well rooted, it’s best not to prune them during the growing season. However if you need to trim back too many of the branches on a large bush or shrub, wait until spring when there is more light for such work. Wait until after danger of frost has passed as well. The good thing about this type of pruning is that old wood can be removed from a plant without damaging live new growth underneath. It’s important not to prune roses too deeply because doing so can damage root systems and cause disease problems.