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Commonly known as Blue passion flower
EvergreenRich-green leaves to 10cm (4in) long, divided into, usually, 5 oblong lobes.
Striped, Veined or Multicoloured
WhiteSometimes pink tinged with purple-, blue-, white-zoned coronas.
Height10m (33ft) or more
ClimberSome of these climbing plants will need trellis or wire supports if grown on walls or fences. Other grow aerial roots and are self-clingingFast-growing tendril climber with moderately branching, slender, 4-angled, grooved stems.
Hardy - average winterHardy through most of the UK apart from inland valleys, at altitude and central/northerly locations. May suffer foliage damage and stem dieback in harsh winters in cold gardens. Plant can withstand temperatures down to -10°C (14°F)
Additional FeaturesGood to knowOvoid, orange-yellow fruit to 6cm (2½in) longPests & DiseasesRed spider mites, whiteflies, mealybugs, scale insects, cucumber mosaic virus.Place of originCentral and west South AmericaResistant to honey fungusThese plants have little or few problems with honey fungus.
Flower ShapeBowl-shaped7-10cm (3-4in) across
HardinessFrost hardy (down to -5)
Pruning groupPruning group 6Suitable for: Evergreen shrubs or climbers that need little to no pruning.
Action: Trim back shoots that spoil symmetry and to fit available space.
When: Annually after flowering if on previous year's growth, or in later Winter or Spring if flowering on current year's growth, or as requires.
RHS group 9 & 11Pruning group 8Suitable for: Wall trained shrubs and less vigorous climbers.
Action: For climbers 'spur prune' by cutting back 3-4 buds of the permanent framework. For wall trained shrubs cut back flowered shoots to within 2-4 buds of permanent framework.
When: Annually after flowers if on previous year's growth, or in late Winter or Spring if on current year's growth.
RHS group 12 & 13
Soil ConditionsFertile moist well-drained soilModerately fertile
Buy Varieties of PASSIFLORA caerulea
striking ivory white flowers, hardy