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Clematis 'Kermesina' (Vt) AGM

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© R.J. Evison

Characteristics

Plant type

Climber/Wall Shrub

Habit

Climbing

Resilience

Hardiness

H6 (hardy - very cold winter)

Colour

Flower

Dark Red in Autumn and Summer

Foliage

Green in Autumn, Spring and Summer

Size

Ultimate height

2.5-4 metres

Ultimate spread

1-1.5 metres

Time to ultimate height

2-5 years


Preferred common name

clematis 'Kermesina'

Family

Ranunculaceae


Clematis can be deciduous or evergreen shrubs or herbaceous perennials, mostly climbing by twining leaf-stalks, and often with showy flowers. Some have attractive fluffy seed-heads in autumn

Viticella Group are deciduous climbing shrubs with usually pinnate leaves, and nodding, single to double, open-bell-shaped flowers of small to medium-size, produced on the current year's growth in summer and early autumn

'Kermesina' is a very free-flowering, large vigorous deciduous climber with pinnate leaves. Single, rich deep crimson flowers with four broad sepals are 6cm across and blotched white at the base with black stamens. Flowers midsummer to early autumn.

Synonym(s)

  • Clematis kermesina rubra
  • Clematis viticella 'Kermesina'

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

  • North-facing, South-facing, East-facing or West-facing
  • Sheltered or Exposed

Cultivation

Plant in a moisture-retentive, well-drained soil, with the roots and base of the plant kept cool and shaded by other plants or a layer of pebbles at the base. Plant with the crown 5–8cm (2–3in) deep to encourage new shoots to grow from below ground level

Soil

  • Moist but well-drained
  • Alkaline or Neutral
  • Chalk, Clay, Sand or Loam

Propagation

Propagate by layering or semi-hardwood cuttings

Suggested planting locations and garden types

Wall-side Borders


How to care

Pests

Young shoots may be troubled by aphids and caterpillars; petals can be eaten by earwigs

Diseases

May suffer from clematis slime flux