Posted: 06/06/2016 at 16:13
Lilysilly, they would be fine together. Princess Diana is a group 3 Clematis which you cut back hard in spring. Ramblers are pruned after flowering, usually mid summer, so NOT pruned at the same time, and as its pretty thornless it'll easily pull out the spent stems. It may be a slight tangle in spring but by then the old clematis stems are easily removed.