The Passiflora caerulea or "passion flower" is native to the Tropical Regions of South America. The family of belonging is that of the Passifloraceae. There are about five hundred species that make up this genus; these are, in particular, evergreen climbing plants, which can reach a height of 7 meters and which are particularly suitable for covering and covering walls, nets, trellises, etc. They produce thin herbaceous or semi-woody stems, of a bright green color, they have numerous tendrils that allow the plant to cling easily to the supports; they bear large palmate leaves, of the same color as the stems. During the summer they produce large white, lilac, blue or pink flowers, with a very particular shape. Passion flowers are hardy and vigorous plants; there are some species on the market that fear intense cold and therefore must be grown in a container.
As regards the sun exposure of the passion flower, the plants of passiflora caerulea they prefer well-lit and sunny positions, but they can develop without problems even in partial shade; some species of passion flower slightly fear the cold and need shelter during the winter; others are completely rustic, although they may lose the aerial part during the coldest months of the year.
Now let's talk about a fateful question we are asked about almost all species ... How wet is passiflora caerulea? Water the passion flower specimens recently planted or grown in pots fairly regularly; the specimens abiding for a long time generally are satisfied with the precipitations, even if they may need watering in case of prolonged periods of drought. During the cold season it is not necessary to intervene with watering.
The propagation of the passion flower can be done by taking cuttings of about 8-10 cm from the mature plants. The cuttings must be planted in a compost of sand and peat and placed in the appropriate multiplication boxes. Once rooted, the plants will be placed in vases with a diameter of 8-10 cm.
The multiplication can also take place by seed. In this case it is important to maintain a temperature of 18-20 ° C. Once rooted, the seedlings will be repotted (pots of about 10 cm in diameter) as it was prepared for multiplication by cutting. At the end of winter (February-March) it is advisable to prune the plant; this will clean the plant of all the excess branches, as well as the branches that have died due to the frost during the winter season.
Parasites and Diseases
As for the diseases of the passiflora caerulea, the disease that most easily affects the passion flower is the Cucumber mosaic virus; it is a disease which manifests itself in winter and spring and which affects the leaves of the plant by deforming and staining them.
The attacks of this virus against the passion flower are quite characteristic and recognizable and can be fought with special products if recognized in time.
Passion flower - Passiflora caerulea: Species
In Italy, the most widespread species is the Passiflora Cerulea, which is characterized by the flowers of colors ranging from white to light blue and from light blue to purple; these flowers, which can even reach a diameter of 7 cm, appear throughout the summer from July to the end of September, giving a highly appreciated show.