Clematis 'Jackmanii'

late large flowered clematis (group 3)

Eventual height & spread

Clematis 'Jackmanii'

late large flowered clematis (group 3)

  • 3 litre pot | 60cm cane
  • £20.95
  • In stock (shipped within 2-3 working days)
  • 9cm pot | 30cm cane
  • £14.99
  • available to order from autumn
  • 2 + 1 FREE 9cm pots
  • £29.98 £9.99 each
  • available to order from autumn
Delivery options
  • Standard £5.99
  • Named Day £10.99
  • Position: full sun or partial shade
  • Soil: fertile, well-drained, neutral soil
  • Rate of growth: fast-growing
  • Flowering period: July to September
  • Hardiness: fully hardy


Sumptuous, large, deep purple flowers with greenish centres from mid-summer to early autumn. This large-flowered clematis can be relied upon to produce a mass of velvety blooms with either 4, 5 or 6 petals from June to September. Ideal for growing in a large container, supported by trellis or garden canes, it copes well in a north-facing site.


To avoid dry conditions, and to ensure good soil contact around the rootball, we advise planting climbers at least 30cm (12in), and preferably 45-60cm (18-24in) away from the base of a wall or fence. An even larger distance should be maintained when planting climbers beside an existing tree or shrub.

Choose a spot with well-drained, fertile soil and ensure the location receives plenty of sunlight—at least 6 hours a day—for optimal flowering.

However, they prefer their roots to be cool and shaded, so plant low-growing plants or add a layer of mulch of well-rotted compost around the base, avoiding the immediate crown.

In early spring cut back the previous year's stems to a pair of strong buds about 15-20cm (6-8in) above ground-level and apply a slow-release balanced
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  • Humans: Skin irritant; Pets: Harmful if eaten

Goes well with