One way to grow passion fruit is to start the plant from seed. To do so, it is best to use fresh seed – right from a ripe fruit! For passion fruit, simply collect a handful of seeds from inside the fruit, rinse and wipe them down well to remove the pulpy coating, and plant them.
Passion fruit seeds should be planted 1/4 to 1/2 inch deep in seedling start mix or loose, fluffy potting soil, and then kept damp and warm until they sprout – which is how most seeds are started. A heating mat may come in handy. Patience is key here, because even the freshest seeds can take 10 to 20 days to germinate. Older dry seeds can take months! Soaking dry seeds for a day or two before planting can help promote sprouting.