Having moved to present house in April, the garden has taken a back seat (much interior work ongoing) I have inherited several roses in the south facing front garden. Some are climbers - in large containers situated against fence in driveway and some in borders. They have flowered profusely but now have dreadful blackspot/rust? Some leaves are completely brownish black and they all look very sickly. I will be re-designing the front and back gardens and wonder whether to put the container roses into the ground somewhere. They are quite small and quite straggly, although having
flowered well earlier in the summer. I think a most of the roses are quite old and some seem much too tall (see pic) Would you advise cutting them right down then making sure they are fed/treated with Roseclear/Multirose etc in Spring? How much could I safely prune them back? The rose above is approx 7' tall. They look ok in these pics but they were taken in early July. Any advice much appreciated!