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    • Essentially stable in form & colour
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Passiflora caerulea

blue passion flower

AGM plants

AGM plants have been through a rigorous trial and assessment programme. They are:

  • Excellent for ordinary use in appropriate conditions
  • Available to buy
  • Of good constitution
  • Essentially stable in form & colour
  • Reasonably resistant to pests & diseases
blue passion flower

© Christopher Whitehouse

41 suppliers RHS Plant Shop from £2.75

  • Other common names blue passion flower
    blue crown

    common passion flower
    flower of five wounds
    southern beauty
    wild apricot

    see more

  • Synonyms Passiflora chinensis
    Passiflora mayana

  • Family Passifloraceae

  • Genus Passiflora are mostly tender tendril-climbing shrubs, with simple or palmately-lobed, generally evergreen leaves and showy flowers of distinctive structure with often colourful coronal filaments, followed by conspicuous fruits, edible in some species

  • Details P. caerulea is a vigorous large deciduous or semi-evergreen climber with twining tendrils. Leaves dark green, with 5-7 finger-like lobes. Flowers to 8cm in width, white, with blue and purple coronal filaments. Fruits ovoid, 4cm, orange

  • Plant range S America

Characteristics

  • Foliage Semi-evergreen

  • Habit Climbing

  • Toxicity Ingestion may cause severe discomfort

  • Hardiness

    Hardiness ratings

    All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

    • H1a - Under glass all year (>15C)
    • H1b - Can be grown outside in the summer (10 - 15)
    • H1c - Can be grown outside in the summer (5 - 10)
    • H2 - Tolerant of low temperatures, but not surviving being frozen (1 to 5)
    • H3 - Hardy in coastal and relatively mild parts of the UK (-5 to 1)
    • H4 - Hardy through most of the UK (-10 to -5)
    • H5 - Hardy in most places throughout the UK even in severe winters (-15 to -10)
    • H6 - Hardy in all of UK and northern Europe (-20 to -15)
    • H7 - Hardy in the severest European continental climates (< -20)

    H4

Colour

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Chalk

    Chalk

  • Sand

    Sand

  • Loam

    Loam

  • MoistureMoist but well-drained

  • SoilChalk, Sand, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 8-12 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Fast-growing climber for sun or partial shade, thrives in moist but well-drained soil. In cold areas, grow in a container and overwinter indoors. Note that due to its vigorous nature in some gardens it has the potential to become a nuisance

Propagation Propagate by seed, semi-hardwood cuttings or by layering in spring or autumn

Suggested planting locations and garden types Wall-side Borders City & Courtyard Gardens Patio & Container Plants Cottage & Informal Garden Sub-tropical

How to care

Pruning Pruning group 11 or pruning group 12 if necessary, in early spring

Pests glasshouse red spider mite, glasshouse whitefly, mealybugs and scale insects may be a problem under glass

Diseases May be subject to a virus

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Passiflora caerulea

blue passion flower

Buy from £2.75 at the RHS Plants Shop

Buy from £2.75 at the RHS Plants Shop

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