The numerous species of passion flower (which also includes the popular maracuja) originally come from the tropical and subtropical regions of the Neotropics, a region that essentially includes Central and South America. Due to this origin, the Passiflora needs a lot of sun and the right soil to thrive.
Perfect Conditions: Sunny and sheltered
Surely you also want to cultivate the passion flower because you admire it for its distinctive flowers. So that you can enjoy lush flowers, place the plants in a sunny, warm and sheltered place where they can really spread. Passiflora is a climber and will wither away if not given adequate space to grow. As a rule of thumb, however, the sunnier and warmer the summer, the more flowers will form. Of course you can also keep the plant indoors, but then you will have to limit its growth. Passiflora cultivated indoors usually do not bloom as luxuriantly as a merrily climbing specimen on a south-facing house wall.
the right earth
In addition, the passion flower - no matter which species you choose - has a very high need for nutrients and water. So choose a humus-rich soil (commercial potting soil is sufficient) and mix it with a handful or two of sand for more permeability. Optimize the whole thing with some clay powder and use a layer of expanded clay (€19.73) on the bottom of the pot to ensure that excess water can always drain off.
tips and tricks
Although the passion flower can be in the garden over the summer, it is not hardy and should therefore not overwinter outside. Leave the plant in a (not too big) pot or bury the plant pot in the ground.