HOW TO PRUNE
Prune in the spring (March or April), aiming to avoid the hard frosts. The time to start is when you notice the leaf and flower buds start to swell. The general rule is, the harder you prune the more vigorous the new shoots will be. So, if your rose is getting leggy or spindly you may wish to be brave, but if the bush is a good shape already then you don’t need to take the stems so far back. Start by cutting out any dead, brown wood. Then look at where stems are crossing or overcrowded and take off some of those. Cut the rest of the stems about 1 cm above a bud, cutting straight across rather than at an angle.