Plant passion flowers in a position of full sun. The foot of a sheltered, sunny wall in a well-drained soil will provide the best results. Passion flowers enjoy a moist but well-drained soil.
Passion flowers can also be grown in containers. Here, they prefer a more gritty compost that offers free drainage. Avoid a peat-based compost as these can easily become waterlogged.
Avoid a windy spot as foliage can easily be damaged by strong winds.
Improve the drainage of the soil by digging in horticultural grit. Plant and firm in.
Hardy plants can be trained up a pergola, obelisk or galvanised wires run across a wall. Guide the plant on to the support with a garden cane. The plants are self-clinging thanks to tendrils, so when mature they'll not need tying in.
Growing passion flowers from seed is not easy. Plants that are produced from seed can take over a decade to flower, so propagation from cuttings is preferable.
Take cuttings in early spring. Remove new growth from below a node – about 6cm in length is long enough. Remove the bottom leaves and tendrils and place the cutting in a pot of cutting compost. Cuttings will root successfully when placed in a propagator with bottom heat of around 20ºC.
A very wet and cold winter can lead to the loss of hardy passion flowers. A cold and wet winter is far from ideal. To avoid losing plants, dig in some horticultural grit before planting if you have a heavy soil.
Stems carrying foliage that has been damaged by wind or frost should be cut back in spring.
Tender passion flowers grown in a container should be moved into a frost-free place for winter. If growing in a greenhouse or conservatory protect the plants from too much direct sunlight with greenhouse shading.
Prune passion flowers after flowering just to keep them neat, cutting back to a healthy bud. There is no need to cut them back hard. If plants have got out of hand and need retraining, cut them back in spring.