Passiflora are hardy or half hardy perennial vines that can reach from 4.5 to 9 m (14 to 28 feet) in height.
They carry beautiful flowers of white and purple. These bloom from late summer to early autumn.
Passiflora incarnata by ggallic.
Some members of Passiflora plant genus also carry attractive egg shaped fruits in the autumn.
Some of the common names for members of the Passiflora genus include Passion Flower, Maypop, and Granadilla.
Passiflora caerulea (Blue Passionflower / Common Passion Flower), photograph by Forest and Kim Starr; CC.
Passiflora incarnata (Maypop / Purple Passionflower / Wild apricot), photograph by Pick him!; CC.
Passiflora edulis (Passion Fruit), photograph by Dick Culbert; CC.
Passiflora ligularis (Sweet Granadilla / Grenadia), photograph by Forest and Kim Starr; CC.
Passiflora lutea (Yellow Passionflower), photograph by Fritz Flohr Reynolds; CC.
Passiflora quadrangularis (Giant Granadilla / Giant Tumbo), photograph by 阿橋 HQ; CC.
It is probably easiest to grow passion flower and other Passiflora members from cuttings, these can be taken in spring or autumn.
If you prefer to grow from seeds, then be aware that they can take up to a year to germinate (if at all).
The seeds should be soaked for a day, sown into flats, and maintained at about 27 degrees Centigrade (81°F) in the greenhouse.
Once ready, transplant seedlings or cuttings into the garden in mid spring, well after the last chance of frost. Space at about 60 to 90 cm (2 to 3 feet) apart.
As Passiflora are vines that reach a great height, they will require a trellis to grow on.
Passion flowers are able to grow in both sunny or partially shaded parts of the garden.
It is very important that the soil that they grow in is deep and moist; it should be fairly rich.
To look after passion flowers, they should be regularly watered. After three years of growth you can start to prune back the Passiflora vines to make the plant more attractive.
Decayed branches should be pruned, and side shoots cut back to be about 15 cm (6 inches) long. This can be done either at the start of spring or in the autumn.
I hope that you enjoyed this guide on how to grow Passiflora plants. You may also enjoy the following Gardener's HQ growing guides: How to grow Balloon Flower, Aster plant, Clematis plant, and Begonia grandis plants.