|Clematis, Dr /Ruppel||Clematis, Jackmanii|
4 to 8
10.00 to 12.00 feet
2.00 to 4.00 feet
May to October
Full sun to part shade
Deer, Black Walnut
|Grow in fertile, medium moisture, well-drained soils in full sun to part shade. Best sited in locations where the flowering parts of the vine are in sun to part shade but the roots are shaded. Some light afternoon shade is usually beneficial in hot and humid summer climates such as the St. Louis area. Plants needs a trellis or other support on which to grow. Roots should be kept cool, shaded and uniformly moist. Root areas may be shaded with perennials, annuals or small shrubs. A thick root mulch is appreciated. Do not allow soils to dry out.
‘Jackmanii Superba’ is considered to be a pruning group 3 plant. It is usually pruned back hard to strong leaf buds approximately 8-12″ from the ground in late winter. In the alternative, it may be given a light pruning in late winter followed by an additional trim after the first flush of bloom (pruning group 2). Plants need an adequate supply of nutrients during the growing season to support the rush of growth.
Clematis is a genus of over 250 species of mostly semi-woody or woody vines from both the Northern and Southern Hemispheres including Europe, the Himalayas, China, Australasia, North America and Central America. Many hybrids exist.
Plants are usually divided into three groups:
Group 1 – Early-flowering species, C. alpinia, C. macropetala and their cultivars, and C. montana and its cultivars
Group 2 – Early to midseason large-flowering cultivars
Group 3 – Late large-flowering species, late-flowering species and small-flowered cultivars, herbaceous species and cultivars
Genus name comes from the Greek word klematis which is an old name applied to climbing plants.
‘Jackmanii Superba’ is considered to be an improved version to the long time garden favorite Clematis ‘Jackmanii’. It features a more profuse bloom of more rounded and slightly larger flowers. This large-flowered, late-flowering hybrid clematis is a deciduous perennial vine that typically grows to 10-12′ long. Velvet purple flowers (to 5″ diameter) cover the vine with bloom from late spring to early fall (June to September). Flowers are followed by silky seed heads.
No serious insect or disease problems. Watch for powdery mildew, leaf spots, rust, virusesm and clematis wilt. Potential insect pests include aphids, vine weevils, slugs/snails, scale and earwigs. Spider mites may appear.
Can be trained to climb a wall, trellis, fence, arbor, porch, lamppost or other stationary structure. Provides good architectural height and framework for small gardens. Can also be planted to sprawl over and through large shrubs or to scramble over rocks along paths.
|Information on this page is generally from Missouri Botanical Gardens,
Dave’s Garden, All things Plants or Texas Superstar
This page last updated or reviewed 210706