Passiflora caerulea: is the passionflower hardy?

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Passiflora caerulea: is the passionflower hardy?: Passiflora

The Passiflora caerulea belongs to a genus of over 500 species. Since the blue passion flower comes from the tropical and subtropical regions in America, this is only partially hardy. However, if the site has the right conditions, it can be cultivated outdoors all year round. However, important is a good winter protection. In cooler areas, the exotic flower needs a suitable winter quarters.

Passiflora caerulea

Passiflora caerulea is also known as the Blue Passion Flower and rewards the gardener with a spectacular flowering sea when the conditions are right. In a region with a mild climate, it can also be cultivated outside the year. However, it should be a microclimate, in which no low minus degrees occur in winter. Otherwise the Passiflora caerulea suffers only unnecessarily and can even completely die due to extremely cold temperatures. With the right winter protection, the blue passion flower can also be planted in cooler regions. It is important to have sufficient space, because the Passiflora caerulea tends to an escalating growth and can quickly overgrow areas.
  • Shrub-like climbing plant, can grow up to 10 meters long and tall
  • Grows and flowers in the local latitudes
  • Ideal locations are wine-growing areas and the Rhineland
  • Does not need a lot of light
  • Grows better in the light-flooded partial shade
  • Exuberance occurs during spring, either in April or May
  • High season of flowering is in summer and early fall
  • Forms blue-white and about 10 cm large flowers
  • Shows in the mild climate in late autumn many flowers
  • Throw the leaves completely off in the winter, dry the tendrils
  • Discarded foliage can be used as winter protection


Passiflora caerulea - passionflower

The Passiflora caerulea is originally from climates, where the temperature during the winter months may well fall below freezing. Therefore, the blue passion flower is conditionally hardy and can overwinter outside under certain conditions. However, the planting of the Passiflora caerulea is only possible in areas with a mild climate. Loamy, loose and nutrient-rich soil qualities sustainably improve the winter hardiness, as well as protected locations in front of walls and on house walls. In high mountain areas and regions with extremely icy winters and heavy snowfall, the flower needs a winter quarters during the cold season.
  • Hardy especially in milder regions
  • On average, winter temperatures should not be colder than about -7° C
  • Keeps short-term values ​​down to about -15° C
  • Ideal are wind and weather protected locations
  • Ideal for cultivation as a container plant
  • Feels well in sunny and warm winter gardens all year round

winter protection

Although the Passiflora caerulea is hardy, it needs additional winter protection to overwinter in the garden. This is especially necessary in the first years of life to protect the delicate young plant against cold temperatures. If the Blue Passion Flower is in a drafts-exposed location, special protection is necessary. This not only isolates the heat, but also keeps an excess of rain and snow away from the plant.
  • Put protection from fir-trees over the roots
  • Alternatively apply mulch layer of leaves or straw
  • Sight thick layer, but lay out loosely
  • If cold, use cold protection fleece if necessary
  • To protect against heavy drafts with spruce trees
  • Water only on frost-free days

winter quarters

Passiflora caerulea - passionflower

The plant is already starting in October on the winter. If the Blue Passiflora is considered to be a container plant in colder regions, it should be set up in a sheltered winter quarter no later than November. Ideally, the plant can get used to the new environment in winter quarters without too much temperature difference. However, the temperature during wintering should not be too high, otherwise the plant can not adapt properly to hibernation. In this case, there is a risk that the blue passion flower again expelled. The heated living room is not the right place for it, better are unheated guest rooms and hallways. At the beginning of spring, the Passiflora caerulea should wake up slowly from hibernation. Be careful not to damage the delicate plant.
  • Cut down the plant in autumn
  • Get into the house in cold areas
  • Relocation is pending as soon as the temperature drops permanently below 10° C
  • Hibernation in a frost-free and bright room
  • Ideal are cool temperatures, between 5 to 12° C
  • Do not fertilize during winter rest
  • Water only a little, but regularly
  • Root bales should not dry out completely
  • From March slowly get used to external location again
  • Beware of sun and late frosts
  • Do not place the plant directly in the midday sun
  • During later freezing nights again
Tip: The more autumnal pruning is applied, the darker the room for the winter can be.

Video Board: Growing the Hardy Maypop Passion Flower.

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