One of my favourite rambling roses is growing over the railings at the side of steps in a neighbour’s garden. From there it cascades over the lime washed facade of the house and mingles with a summer jasmine. The large clusters of petals of R. ‘Veilchenblau’ are violet-purple and when fully open the scent is of apples. It is best planted in partial shade because the petals tend to fade in full sun. And although it does not repeat flower, it is virtually thornless and I would always want it for the scent alone.