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Climber Wall Shrub

Clematis 'Ken Donson' (EL)

clematis 'Ken Donson'

'Ken Donson' grows to 2.5-3m, and has large, deep blue flowers with contrasting white filaments and bright yellow anthers making up the gold stamens. Flowers may be produced any time between June and September and followed by prominent seedheads

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Size
Ultimate height
2.5–4 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Blue Green
Autumn Blue Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or North–facing or West–facing or East–facing

Exposure
Sheltered
Hardiness
H6
Botanical details
Family
Ranunculaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Climbing
Potentially harmful
Skin irritant. Wear gloves and other protective equipment when handling. Pets (rabbits): Harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus

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 seedheads in autumn

Name status

Accepted

Horticultural Group
Early Large-flowered clematis have large star-shaped flowers in early summer, often with a second flowering in late summer

How to grow

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 deep to encourage new shoots to grow from below ground level. See clematis cultivation for more advice

Propagation

Propagate by softwood cuttings in spring, semi-ripe cuttings in summer or propagate by layering in late winter or early spring

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Flower borders and beds
  • Wall side borders
Pruning

Clematis pruning: group two

Pests

May be susceptible to aphids, snails and caterpillars; petals may be eaten by earwigs

Diseases

May be susceptible to honey fungus (rarely), clematis wilt and clematis slime flux

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