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

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    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases
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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
RHS Plant Shop from £2.8 Sold by 45 nurseries

  • 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

  • Loam

    Loam

  • Sand

    Sand

  • MoistureMoist but well-drained

  • SoilChalk, Loam, Sand

  • 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 Sub-tropical Cottage & Informal Garden Patio & Container Plants

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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RHS Plants Shop

Passiflora caerulea

blue passion flower

Buy from £2.8 at the RHS Plants Shop

Buy from £2.8 at the RHS Plants Shop

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