General Culture:
Grow in fertile, medium moisture, well-drained soil in full sun to part shade. Roots should be kept cool, shaded and uniformly moist. Bloom occurs on the current year's growth. Prune back hard (to approximately 8-12" from the ground) to strong leaf buds in late winter to early spring. Needs an adequate supply of nutrients during the growing season to support rush of growth.
Noteworthy Characteristics:
'Rouge Cardinal' is a deciduous, large-flowering, semi-woody climbing clematis vine (Jackman group) which typically grows 8-12' and features red flowers (4-6" diameter) with brownish-yellow stamens. Blunt, recurving sepals. Profuse summer bloom. Simple to trifoliate medium green foliage darkens as the summer progresses. Synonymous with and sometimes sold as 'Red Cardinal'.
Problems:
No serious insect or disease problems. Some susceptibility to wilt.
Uses:
This clematis can be trained to climb a wall, trellis, fence, arbor, porch, lamp post or other stationary structure. Provides good architectural height and framework for small gardens. Can also be planted to sprawl over and through large shrubs, over old tree stumps or simply as a ground cover in conjunction with other flowering perennials.
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Garden, 2001-2010