Clematis 'Betty Corning'
Common Name: clematis
Type: Vine
Family: Ranunculaceae
Zone: 4 to 9
Height: 5.00 to 6.00 feet
Spread: 2.00 to 4.00 feet
Bloom Time: June to September
Bloom Description: Pale lilac
Sun: Full sun to part shade
Water: Medium
Maintenance: Low
Flower: Showy, Fragrant
Tolerate: Deer, Black Walnut

Culture

Grow in fertile, medium moisture, well-drained soils in full sun to part shade. Vining hybrids are 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. Clematis vines need 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.

'Betty Corning' is pruned as Group 2. See pruning instructions below.

Noteworthy Characteristics

Clematis is a genus of over 250 species, most of which are woody to semi-woody deciduous vines climbing by twining leaf stalks or in some cases trailing over support, but in a few cases grow as freestanding or sprawling herbaceous perennials and small deciduous or evergreen shrubs. Most have flat, cupped or bell-shaped flowers. Some plants feature ornamental fluffy seed heads in autumn. Plants bear opposite, simple to compound leaves which are usually deciduous but sometimes evergreen. Compound leaves range from lobed to trifoliate to biternate to pinnate to bipinnate. Clematis is native to both the Northern and Southern Hemispheres including Europe, the Himalayas, China, Australasia, North America and Central America.

Plants are often divided into three groups based on pruning needs.

Group 1 – Flowers only on old wood (previous year). Prune after spring flowering.
Group 2 – Flowers on both old and new wood. Typically, little pruning should be done for woody-stemmed members of this Group. If cut to the ground or pruned in fall or spring, flowering will be reduced or delayed but not prevented.
Group 3 – Flowers only on new wood. Can be cut to the ground in fall or spring.

Genus name comes from the Greek word klematis which is an old name applied to climbing plants.

‘Betty Corning’ (C. crispa x C. viticella) is a late, small-flowered, semi-woody, climbing vine that was first discovered growing in Albany, New York in 1932. It typically grows to 6’ tall. It features single, nodding, bell-shaped, pale lilac flowers (to 2” long) with recurved tips. Flowers freely bloom from summer to fall. Flowers are slightly fragrant. Branches are clad with bipinnate to pinnate-compound dark green leaves.

Problems

No serious insect or disease problems. Susceptible to wilt/stem rot (can be fatal), powdery mildew, leaf spots, rust and viruses. Potential insect pests include aphids, vine weevils, slugs/snails, scale and earwigs. Watch for spider mites.

Garden Uses

Clematis can be trained to climb a wall, trellis, fence, arbor, porch, lamppost or other stationary structure. They provides good architectural height and framework for small gardens. They can also be planted to sprawl over and through shrubs, scramble over old stumps or simply as a ground cover in conjunction with other flowering perennials. Containers.