Clematis Blue Moon ('Evirin'PBR) (EL)

RHS Plant Profile
clematis [Blue Moon]

Synonyms

Clematis 'Evirin'PBR
Clematis 'Claire de Lune'
Clematis Claire de Lune

Climber Wall Shrub

Compact, free-flowering, deciduous climber, about 2.5-3m in height, with mid-green leaves, and large, white, wavy-edged flowers, 15-18cm across, flushed lilac-blue in the centre, darker at the edges of the sepals, and contrasting, prominent reddish stamens, flowering late spring to early summer, and early autumn Slightly smaller summer flowers are generally darker in colour

Position

Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

2.5-4 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity
2–5 years
Max Spread
1.5-2.5 metres
Max Height
2.5-4 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Partial shade
Aspect
West–facing or East–facing or North–facing
Exposure
Sheltered
Hardiness
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

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
Trade
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 moisture-retentive, well-drained soil, best in part shade to preserve the flower colour; 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. Can be grown in containers at least 45cm deep and wide in a peat-free, loam-based potting compost. See clematis cultivation

Propagation

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

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Climber and wall shrubs
  • Cut flowers
  • Wall side borders

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