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Clematis Jackmanii Superba


A very popular variety

One of the most popular of all Clematis with large, rich-purple flowers in summer.


It grows best in a sunny spot with the roots in a cool spot and shaded from the heat of the sun. It can be grown in the garden or a large pot and looks great when trained over an arch or trellis. It is equally effective if allowed to grow through larger shrubs for support.


It loves any fertile, moist and well-drained soil. Cut back hard in spring to encourage the new growth that will flower later in the summer.

Clematis derives from the Greek klematis for various climbing plants.

Plant details

In depth plant information

Property Value
Plant type Clematis, Climber
Flower colour
Foliage colour
Typically available March - September
Season of interest Summer
Flowering July - August
Evergreen No
Plant height 455 cm - 600 cm
Plant width 165 cm - 200 cm
Fragrant flowers No
Attracts bees No
Attracts butterflies No
Plant height in 5 years 530 cm
Hardiness zone (?) H4

Will perform best in these conditions

Property Value
Soil type Chalk, Clay, Sand, Loam
Light exposure Full sun, Part shade
Soil drainage Well drained, Medium
Planting instructions

Water the plant in its pot thoroughly before planting – give it a good soaking. Prepare the area by digging a hole twice the size of the pot at least 15cm away from the wall, fence or support. Dig compost into the base of the hole. Remove the pot and position the plant – along with its supporting cane in the hole, leaning onto the support. The top of the rootball needs to be 8cm below the level of the surrounding soil. Refill the planting hole with a mixture of garden soil and compost, firming as you go. Arrange and tie the stems onto the support. Water in well and keep well watered during the plant's first year. Mulch with bark chippings or stones to keep the roots cool.

Planting site Patio container

Check store availability

2.5 litre pot £9.99 Check Stock

Typically available

From March to September