Sowing passion flowers or passiflora from seed is very rewarding. Some seeds geminate more easily than other varieties. There are many different ways of sowing seeds. In general when I try to sow a new seed, I try a few different ways before sowing the bulk of my seeds. Here’s my favorite way of sowing passion flower seeds.
- Pre-soak the seeds in a glass of luke warm water for 24 hours. I Let them sit overnight and sow the following day. Never let them soak for more than 2 days.
- Fill a pot with seed starter potting soil. It’s best to use a well-draining growing medium. I like to use a mixture of cactus compost (50%) and perlite (50%).
- Put the seeds in the growing medium about 1 cm deep.
- Put the pot in a sealed plastic bag somewhere warm. A propagator or sowing mat is very reliable, but a sunny windowsill works great too. The plastic bag makes sure the humidity remains high.
- Place the pot in direct sunlight, and keep the soil moist. Do not let the soil dry out, because this will stop the germination process and might even kill your seedlings!
- Keep the area warm while the passiflora seeds are germinating. The seeds need heat to sprout. If you are using a heat mat 27 °C works well.
- Now just wait! The seeds normally take up to four weeks to sprout. How fast they germinate is dependent on the conditions. There may be late seedlings that sprout after months, so if not all your seeds sprout you can let the pot sit somewhere and you may be rewarded with late seedlings.
- When the seeds sprout open the plastic bag at least once a day to prevent molding. When the seeds have their first pair of true leaves (four in total) you can repot them.