Passiflora is a tropical vine that is visually striking and easy to grow. If you’re looking to propagate passionflower, it can easily be done through seed or stem cuttings in the spring or layering in late summer. To germinate passion flower seeds, it’s best to use fresh fruit as they don’t store well and are dormant for up to a year. If using stored seeds, lightly rub them with fine sandpaper and soak them in lukewarm water for 24 hours. Discard any floating seeds and plant the remainder about ¼ inch deep in moist potting mix or peat compost. Cover with vented plastic until germination begins, which can take anywhere from two to eight weeks. Keep out of direct sunlight until the second set of leaves grows. Don’t expect immediate blooms from seed-grown plants, as some species may take up to ten years. For stem cuttings, take them during the conifer stage using sharp pruners to cut just below the node. Peel off the bottom leaves and tendrils, dip the ends in rooting hormone, and plant about half an inch deep in well-draining potting mix or a sand and peat mix. Cover with a clear, vented plastic bag and place in a warm, shady area. You should notice new growth in about a month and significant root formation within a few months, at which point they can be transplanted to their permanent locations.
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