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Clematis alpina 'Pamela Jackman' (A) AGM

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© RHS 1999

Characteristics

Plant type

Climber/Wall Shrub

Habit

Climbing

Resilience

Hardiness

H6 (hardy - very cold winter)

Colour

Flower

Cream and Dark Blue in Spring and Summer

Foliage

Green in Spring and Summer

Fruit

Grey/Silver in Autumn

Size

Ultimate height

1.5-2.5 metres

Ultimate spread

1-1.5 metres

Time to ultimate height

2-5 years


Preferred common name

clematis 'Pamela Jackman'

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

Atragene Group consists of woody climbers with deciduous, 1 to 2-ternate leaves and nodding, bell-shaped, single or double flowers to 10cm across, on old wood in spring and early summer, occasionally also later, on current year's growth

'Pamela Jackman' is a deciduous climber with divided leaves and solitary, nodding cream-centred, deep blue flowers to 7cm wide from mid-spring to late spring and occasionally in late summer, followed by fluffy seed-heads

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

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

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. Can be grown in containers at least 45cm (18in) deep and wide in a soil based potting compost

Soil

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

Propagation

Propagate by layering or semi-ripe cuttings

Suggested planting locations and garden types

City/Courtyard Gardens, Cottage/Informal Garden, Flower borders and beds or Wall-side Borders


How to care

Pests

Aphids, slugs and snails may attack young growth

Diseases

May be affected by clematis wilt, powdery mildew in dry soils, fungal leaf spot and clematis slime flux