Passiflora 'Star of Bristol'

RHS Plant Profile

passion flower 'Star of Bristol'

Conservatory Greenhouse

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Vigorous evergreen climber about 4m tall, with slender stems and rounded 3-5 lobed dark green leaves to 10cm long, the central lobe the longest. From summer to autumn saucer or star-shaped, rich mauve flowers 11cm across, with darker spreading coronas and ovoid, bright orange fruit 5cm long are produced. The pulp in the fruits only can be eaten when they are fully ripe and yellow-orange. Unripe fruit is toxic

Position

Full sun, Partial shade

Soil Types

Loam

Max Height

2.5-4 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity: 5–10 years
Max Spread: 1.5-2.5 metres
Max Height: 2.5-4 metres

Growing Conditions

Loam

Moisture: Moist but well–drained
pH: Alkaline or Neutral

Position

Full sun Partial shade

Aspect: East–facing or South–facing or West–facing
Exposure: Sheltered
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): H2

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Passifloraceae
Native to GB/Ireland: No
Foliage: Evergreen, Semi evergreen
Habit: Climbing
Potentially harmful: Fruit are ornamental - not to be eaten. Wear gloves and other protective equipment when handling Pets: Fruit are ornamental - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
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
Name Status: Accepted

How to Grow

Cultivation

Grow in a conservatory or frost free greenhouse in a container of peat-free, loam-based potting compost in full light, with shade from hot sun. See passion flower cultivation

Propagation

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

Suggested planting locations and garden types

Sub-tropical
Conservatory and greenhouse

Pruning

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

Pests

May be susceptible to glasshouse red spider mite, glasshouse whitefly, mealybugs and scale insects under glass

Diseases

May be susceptible to honey fungus (rarely) and a virus