• Eventual height: 0.75m
  • Eventual spread: 1m

Clematis heracleifolia 'Cassandra'

clematis (group 3)

5 year guarantee RHS award of garden merit Perfect for pollinators
3 litre pot | 60cm cane £29.99
PL30002917
£29.99
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  • Standard £5.95

This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.

  • Position: Full sun or partial shade
  • Soil: Moderately fertile, moist but well drained soil
  • Rate of growth: Average
  • Flowering period: July to September
  • Hardiness: Fully hardy


‘Cassandra’ showcases rich deep blue hyacinth-shaped flowers with a strong scent, blooming late summer. This non-climbing herbaceous perennial forms an open bush, ideal for sunny borders or threading through shrubs like roses and philadelphus. With its jagged-toothed dark green leaves and petite fragrant flowers, this lovely clematis adds elegance to any garden setting.


  • Garden care:
    Clematis are happiest when their roots are kept cool and moist, so try to plant them where the base of the plants will be lightly shaded by other, lower-growing species. Otherwise, use a clematis root protector, or top-dress the rootball (avoiding the immediate crown), with a generous layer of shingle or pebbles. In early spring cut back the previous year's stems to a pair of strong buds about 15-20cm (6-8in) above ground-level growth (leaving it to overwinter) and apply a slow-release balanced fertiliser and a mulch of well-rotted garden compost around the plant - again avoiding the immediate crown.
    • Humans: Skin allergen; Pets: Harmful if eaten
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