'Rouge Cardinal' is one of the large flowering hybrids and is similar in colour to Niobe - deep red but with brown stamens. However, it likes a sunny spot.
Flowering time is June-Sept.
It is not vigorous, achieving a height of 200cm but should be pruned back hard in early spring, before buds form.
Plant deeply to avoid clematis wilt and if wilt occurs cut down to base and plant will shoot again the following season. Feed with bonemeal before and after flowering season, water copiously when in flower.
Propagate by softwood cuttings or layering in early summer.