Most passiflora are not hardy
With a few exceptions (see table below), passion flowers are not winter hardy - and even for the exceptions mentioned, the stated winter hardiness is not absolute. Experienced gardeners recommend planting hardy passion flowers only in regions with mild winters, Otherwise, all Passiflora should if possible under cold house conditions in the house or in the greenhouse overwinter. In concrete terms, this means:
- Passion flower cut down in autumn
- and bring it into the house as soon as the temperatures drop permanently below 10 "C.
- Overwinter in a frost-free,
- but cool (max. 10 to 12 ° C)
- and bright room.
- The more the autumn pruning, the darker the room can be.
- not fertilize.
- Fertilize little, but regularly.
also read
- Passion flower: some species are poisonous
- Passion flower: exotic and easy-care plants for balconies and patios
- Blue passion flower - frost-resistant beauty
If the hardy passion flower is to overwinter outside, the roots in particular should also be included a thick layer of bark mulch and brushwood, if necessary with a cold protection fleece will.
Passion flowers cultivated as houseplants on the other hand, they remain where they are and may just be cut back. But even with these specimens, fertilization and watering should be reduced.Hardy Passifora species
You will surely find the hardy passionflower you are looking for in the table below. The species listed originally come from climatic zones in which temperatures can drop below zero. Usually their frost hardness is given as down to - 15 ° C, but this is only a rough estimate. These Passiflora, provided with appropriate winter protection, can surely overwinter outside in regions with rather mild winters. However, this form of wintering is not advisable in places where experience has shown that it is very cold and snow is also to be expected. The upper shoots can be about 15 to 20 centimeters in autumn cut down radically the plant sprouts out of the rhizomes or the roots again.
| Passion flower - Art | Flower color | Flower size | Frost hardiness | particularities |
|---|---|---|---|---|
| Passiflora violacea | violet | about 12 centimeters | until about. - 10 ° C | very suitable for keeping in pots |
| P. tucumanensis | blue-white or lavender-white banded | about 7 centimeters | until about. -15 ° C | very distinctive flowers |
| P. incarnata (flesh-colored passion flower) | pink, red-purple or white | about 8 centimeters, with fringe-like, wavy appendages | until about. - 15 ° C | Medicinal plant, is considered the most frost-hardy passion flower |
| P. lutea | light green to white | about 2.5 inches | until about. - 15 ° C | richly blooming |
| P. caerulea (blue passion flower) | blue White | about 10 centimeters | until about. - 15 ° C | one of the most popular passiflora species |
Tips & Tricks
Slowly awaken your passion flower from around March Hibernation. But be careful with the sun: Do not place the plant directly in the midday sun, but slowly get it used to it again.
