Caring for the passion flower properly - for a wonderful bloom all summer long

Caring for the passion flower properly - for a wonderful bloom all summer long

Can the passion flower be grown as a houseplant?

Many passion flowers can be kept in the room without any problems, but should be assigned a light and draft-free location. However, Passiflora feels most comfortable in a warm and protected place in the garden or on the balcony. However, cat owners should carefully consider cultivation, because the plant is poisonous for the four-legged friends.

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Does the passion flower have to be watered a lot?

Passion flowers should never dry out, which is why the substrate is best mulched well. Mulching prevents the soil from drying out, for example due to strong sunlight, and can also be carried out on potted plants. Water the passion flower regularly and abundantly, but if possible do not wet the leaves or the flowers. Avoid waterlogging, for example through good drainage in the pot. The plant pot should definitely have several holes in the bottom so that excess water can drain off.

How often and with what should I fertilize the passion flower?

With regard to its fertilization, the passion flower is quite undemanding, a commercial universal or flowering plant fertilizer is sufficient. You give it every 14 days during the growing season together with the irrigation water. Alternatively, long-term fertilizers are of course also recommended, then don't forget to fertilize. In winter, passiflora kept in the room receive around a quarter of the usual amount, while specimens that have been kept cool during the winter are not fertilized at all.

Can I repot the passion flower?

Basically, it is sufficient if passion flowers that have been kept for several years are cultivated in a pot with a diameter of around 20 to 30 centimeters. The plants usually bloom better in smaller pots, while they grow better and develop more leaves in larger pots, but also bloom less often. However, if your Passiflora gets too tight, repot it in spring.

When and how should the passion flower be cut?

Passion flowers should be cut back vigorously in early spring - around February / March - as the flowers usually appear on new shoots. Shorten the side shoots of the passion flower to about 10 centimeters, the main shoot to 15 to 20 centimeters. Use a sharp and clean knife or scissors (risk of infection!). Incidentally, cutting the shoot tips in good time also means that the passionflower branches more strongly.

What diseases are common in passionflower?

High humidity, especially when wintering in a warm room, often leads to an infestation of passion flowers with powdery mildew or botrytis / gray mold. Both fungi mainly cause a whitish to greyish coating on the leaves, which spreads quickly and must be removed and disposed of immediately due to the high risk of infection. At least against powdery mildew, spraying garlic or nettle stock or a mixture of fresh whole milk and water (ratio 1:10) helps. When waterlogged, various bacteria and fungi settle in the substrate, which eventually mold and rot the roots of the passion flower.

What pests should I watch out for in the passion flower?

Plant lice such as mealybugs and mealybugs can be a problem, especially with passion flowers grown in the room, and spider mite infestation is not uncommon. These pests occur when the air is too dry, which is why you can prevent them quite well by regularly spraying the leaves and shoots of the passion flower. Otherwise, the leaves are very popular with ants: If the passion flower is in the garden, the little crawling animals like to nibble on the greenery.

What kind of support does the passion flower need?

Passion flowers are climbing plants and therefore absolutely need a climbing aid. A round arch is useful for indoor Passiflora, as it cleverly accommodates the otherwise huge height of the plant in a smaller space. For passion flowers in the garden or on the balcony, however, a metal grille is recommended.

Is the passion flower hardy?

No, because the passion flower comes from tropical or subtropical climates and absolutely needs a frost-free wintering. Even the varieties that some dealers have declared as “hardy” need a lot of protection and shouldn't really be left outside - which the same dealers often admit themselves in the small print.

How can I overwinter the passion flower?

Like many plants, the passion flower is grateful for a winter break. The wintering should take place in a frost-free, but cool and bright room in the house, winter garden or greenhouse. Water the passiflora little and stop fertilizing as early as August.

Tips & Tricks

Almost all passion flowers are perennial, with one exception: The very delicate, white flowering Passiflora gracilis does not need a lot of care and reliably forms many fruits from which you can then obtain the seeds for the following year.

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