Digging deeperPlant Library

Description:

A vigorous and hardy climber offering a truly delicious color for the garden; the rich velvet-crimson flowers appear in abundance in early summer, repeating throughout the season; a truly distinguished color for the vertical garden

Ornamental Features

Rouge Cardinal Clematis features showy crimson star-shaped flowers with white eyes at the ends of the branches from mid summer to early fall. It has green deciduous foliage. The compound leaves do not develop any appreciable fall color.

Landscape Attributes

Rouge Cardinal Clematis is a multi-stemmed deciduous woody vine with a twining and trailing habit of growth. Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees or shrubs for an effective composition.

This is a relatively low maintenance woody vine. It is a Type 3 clematis; each spring it should be pruned back to within a few inches of the ground, as it flowers on new wood of the season. It is a good choice for attracting hummingbirds to your yard. It has no significant negative characteristics.

Rouge Cardinal Clematis is recommended for the following landscape applications;

• Accent
• Hedges/Screening
• General Garden Use
• Container Planting

Planting & Growing

Rouge Cardinal Clematis will grow to be about 10 feet tall at maturity, with a spread of 24 inches. As a climbing vine, it tends to be leggy near the base and should be underplanted with low-growing facer plants. It should be planted near a fence, trellis or other landscape structure where it can be trained to grow upwards on it, or allowed to trail off a retaining wall or slope. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 20 years.

This woody vine does best in full sun to partial shade. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. Consider applying a thick mulch around the root zone in both summer and winter to conserve soil moisture and protect it in exposed locations or colder microclimates. This particular variety is an interspecific hybrid.

Rouge Cardinal Clematis makes a fine choice for the outdoor landscape, but it is also well-suited for use in outdoor pots and containers. Because of its spreading habit of growth, it is ideally suited for use as a 'spiller' in the 'spiller-thriller-filler' container combination; plant it near the edges where it can spill gracefully over the pot. It is even sizeable enough that it can be grown alone in a suitable container. Note that when grown in a container, it may not perform exactly as indicated on the tag - this is to be expected. Also note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.