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Jackmanii Clematis

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The granddaddy of clematis, more popular than any other variety and for good reason; this variety features endless waves of rich velvet-blue flowers throughout the season; tough, hardy and thrives with neglect

Characteristics

Other Species Names:
Jackman's Clematis
Average Landscape Height:
10 feet
Average Landscape Width:
24 inches
Genus:
Clematis
Cultivar:
Jackmanii
Branching:
multi-stemmed
Plant Form:
spreading
Canopy:
climber
Growth Rate:
medium
Pruning:
clematis3
Flower Color:
royal blue
Flower Form:
star
Flower Period:
from mid summer to early fall
Summer Foliage Color:
green
Maximum Light:
full sun
Minimum Light:
full sun
Maximum Moisture:
moist
Minimum Moisture:
average
Pollution Tolerance:
high

Ornamental Features

Jackmanii Clematis features showy royal blue star-shaped flowers with white anthers 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

Jackmanii 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.

Planting & Growing

Jackmanii 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 should only be grown in full sunlight. 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 highly tolerant of urban pollution and will even thrive in inner city environments. 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.

Jackmanii 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.

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