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Passiflora caerulea Clear Sky- Passion Flower
Passiflora caerulea Clear Sky- Passion Flower
Passiflora caerulea Clear Sky- Passion Flower
Passiflora caerulea Clear Sky- Passion Flower
Passiflora caerulea Clear Sky- Passion Flower
Passiflora caerulea Clear Sky- Passion Flower
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This plant carries a 6 months recovery warranty
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
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The Passiflora caerulea 'Clear Sky', also known as passionflower or blue passion flower, is a vigorous perennial climbing plant, reasonably hardy, semi-evergreen, clinging to its support thanks to its tendrils. Throughout the summer, it produces flowers slightly paler than the species but larger and more resistant to full sun. They have an exotic and graphic appearance that leaves no one indifferent. White-blue in colour, adorned with a collar of tricoloured filaments, light blue, white, and purple, they are followed after a hot summer by orange fruits, edible but tasteless. This highly decorative rambler displays an excellent resistance to frost. It should be grown in the sun, in well-drained ordinary soil, even limestone.
Primarily native to tropical areas of South America, Passiflores belong to the family Passifloraceae, of which they are the most widespread genus, with the others being known only to collectors. There are more than 500 species of Passiflora, as well as numerous spontaneous or horticultural hybrids. They are mostly tropical plants, but some species are subtropical and can survive winter in mild and sheltered areas. Passiflora caerulea is one of the hardiest, capable of withstanding temperatures as low as -12 °C (10.4°F), and therefore is probably the most commonly planted.
'Clear Sky' is a tetraploid variety (meaning it has twice the normal number of chromosomes) obtained by German breeder Roland Fisher. Polyploidy (multiplication of the chromosome stock) enhances certain desirable traits in plants. Starting with a cross involving the Emil Kugler variety, Dr. Fisher obtained 'Clear Sky', which has larger flowers than the botanical blue passionflower. Clear Sky's flowers are also paler and more resistant to full sun. This climbing plant reaches a height of 3m (10ft) and a width of approximately 1.50m (5ft), but it can grow taller in favourable climates and without pruning to limit its growth. Its beautiful deep green foliage, deeply lobed, is semi-evergreen, meaning it falls off in cold winters but remains evergreen in mild climates. The flowers have the same sophisticated structure as the botanical species, with ten petals and sepals that look similar but are whiter. The decorative crown of filaments in Passiflores is dark purple at the base, then white in the middle, and light blue at the tip, vaguely resembling a British cockade... The central sexual floral parts are green and yellow for the stamens and purple striped for the pistil, contrasting the white petals and sepals. This highly sophisticated floral ensemble contributes to the fascination exerted by this plant, which has been associated with the passion of Christ for several centuries, with each floral element having its specific meaning (the Apostles, the nails of the crucifixion...). In Clear Sky, the flowers are very large, reaching a diameter of 11cm (4in), and bloom from May to October. If the summer is hot enough, they develop into decorative orange egg-shaped fruits, edible but tasteless.
The 'Clear Sky' passionflower is a fast-growing, rambling plant that clings to its support with tendrils. The well-protected stump of this passionflower can withstand temperatures as low as -8 °C (17.6°F) to -10 °C (14°F). It can be grown in a container in colder climates to protect it during winter.
If your climate allows planting it in the ground, know that it thrives in most soils (pH 5.6 to 7.8), slightly moist but well-drained for winter survival. Remember to water it in the summer in Mediterranean coastal climates.
The blue 'Clear Sky' passionflower is perfect for covering fences, trellises, unsightly fences, or old sunny walls in the south or west. Provide it with a sheltered position away from winds. It is an excellent companion for other climbing plants. To enhance the exotic aspect of this passionflower, pair it with Campsis capreolata (or Bignonia capreolata), a vine with stunning red and yellow trumpet-shaped flowers that smell like chocolate! The Jasminum officinale, with its intoxicating perfume, will also be a perfect companion to complete this tropical-looking scene in mild temperate climates.
Passiflora caerulea Clear Sky- Passion Flower in pictures
Plant habit
Flowering
Foliage
Botanical data
This passionflower can be planted in the ground in climates that are not too cold, tolerating frost down to -8°C (17.6°F) to -10°C (14°F). In cooler climates, plant it against a well-exposed wall or in a container to bring it indoors to a frost-free room with minimal light, such as a garage with a window or similar. This climbing plant adapts to a wide variety of soils as long as they are well-drained, as excess water in winter would be fatal. Ordinary slightly sandy soil is suitable, and you can also add gravel to the planting hole to improve drainage if your soil is very clayey. However, it is important to know that it needs some humidity to thrive, but not during the winter.
In hot climates, this plant should be grown in partial shade. However, in all other regions, it requires a sunny location. Once it has taken root properly, it is a low-maintenance plant, except for a brief pruning session each spring to promote the regeneration of its foliage.
Planting period
Intended location
Care
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
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The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.