Propagation - Sowing Passiflora Seeds:
Soak the seeds in lukewarm water, 24-48 h.
Always use sterilized planting soil. Moisten planting media. Place the seeds on the soil cover them 0,5 cm.
Keep the soil moist, not wet. A bright, warm place, approx. 25 °C, for the seeds would be fine.
Within 1-3 months the seeds will germinate, sometimes a bit longer.
To improve germination, lightly sandpaper the seeds on one or both sides using fine sandpaper, then soak them in tepid water for 24 hours. Sow 2-5mm deep in peat or soil based seed compost. Temperature is probably the most important factor in germination, ideally at 20 degrees C (68F) for 16 hours and 30 degrees C (86F) for 8 hours each day. If this is not possible, then a constant temperature of 26 degrees C (79F) is advisable. Using this technique fresh seed germinates in two to four weeks and older seed in four to eight weeks, but 12 to 48 weeks is not exceptional.