Clematis Jackmanii Superba (Late Large-Flowered Clematis)

Among the most popular and easy to grow, Clematis ‘Jackmanii Superba’ is a lovely deciduous vine which gets covered with a profusion of dark velvety mauve flowers, adorned with a deeper reddish flush along the midrib, and harmoniously contrasting with the greenish-cream anthers.

Among the most popular and easy to grow, Clematis 'Jackmanii Superba' is a lovely deciduous vine which gets covered with a profusion of dark velvety mauve flowers, adorned with a deeper reddish flush along the midrib, and harmoniously contrasting with the greenish-cream anthers. The 4-petaled blossoms are held wide open and measure 5 in. across (12 cm). Flowers are followed by silky seed heads. Hardy and vigorous, this Clematis has been a gardener's favorite since its introduction in 1880!

  • Blooms from early to late summer.
  • It thrives in moist, well-drained soils, in full sun or part shade. Ideally, Clematis prefer having their 'heads in the sun and their feet in the shade'. Keep the roots cool and shaded by other plants or add a layer of pebbles or flat stones at the base. Afternoon shade is appreciated in hot summer areas.
  • Hardy to zones 4-8, it is incredibly free-flowering and can quickly grow up to 10-12 ft. long (300-360 cm).
  • Excellent choice for trellis, it can be trained to climb a wall, fence or arbor and is also well suited to containers. Combines beautifully with other climbers such as Roses.
  • This Clematis belongs to the third group of Clematis – a group including Clematis which flower in late summer on growth made in that season. They should be pruned in late winter or early spring and require 'hard pruning': simply cut back the stems to a pair of strong buds about 1ft. (30 cm) above ground level before growth begins in early spring.
  • Toxic to dogs, toxic to cats, toxic to horses.

Requirements

Hardiness 4
– 8

Heat Zones 1
– 9

Climate Zones 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, A2, A3
Plant Type Climbers
Plant Family Clematis
Exposure Full Sun, Partial Sun
Season of Interest Summer (Early,Mid,Late)
Height 10'
– 12'
(3m
– 3.6m)
Spread 2'
– 4'
(60cm
– 120cm)
Spacing 48″ (120cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Tolerance Deer
Garden Uses Arbors, Pergolas, Trellises, Beds and Borders, Patio and Containers, Wall-Side Borders, Walls and Fences
Garden Styles City and Courtyard, Informal and Cottage, Traditional Garden