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Clematis × cartmanii hort. 'Joe' (Fo/m) AGM

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© RHS 1999

Characteristics

Plant type

Shrub or Alpine/Rockery

Habit

Climbing

Resilience

Hardiness

H4 (hardy - average winter)

Colour

Flower

White in Spring

Foliage

Dark Green in Autumn, Spring, Summer and Winter

Size

Ultimate height

1-1.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

clematis 'Joe'

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

Forsteri Group clematis are dwarf spreading or prostrate evergreen shrubs, usually dioecious, with deeply cut, trifoliate leaves and small cream or white, sometimes fragrant, flowers

'Joe' is a compact trailing or scrambling evergreen climber with divided, leathery, dark green leaves and clusters of bowl-shaped, white flowers 4cm across in early spring

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

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

Cultivation

Prefers well-drained gritty soil in full sun or part shade with shelter. Plant with the crown 5–8cm (2–3in) deep to encourage shoots to grow from below ground level. Can be grown in a container in a cold greenhouse or conservtory

Soil

  • Well-drained
  • Acid, Alkaline or Neutral
  • Sand, Chalk or Loam

Propagation

Propagate by semi-ripe cuttings or layering

Suggested planting locations and garden types

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


How to care

Pests

Aphids, slugs and snails may attack young growth

Diseases

Generally disease free but clematis wilt or clematis slime flux can be occasional problems