Here is a good article on how to start your Passion Fruit seeds. Purchase Passion Fruit Seeds here.
1. Use fresh seeds. Freshly harvested passion fruit seeds germinate quickly, but older, dry seeds can take months to germinate if they grow at all.
- A few days before you intend to plant the seed, buy ripe passion fruit from the store. Open it and collect at least half a dozen seeds.
- Spread the seeds out onto burlap and rub them until the juice sacs burst open.
- Wash the seeds in water, and allow them to dry for three to four days before washing them again and drying them in the shade.
- If you plant the seeds immediately, they should germinate within 10 to 20 days.
- If you need to store the seeds, place them in airtight plastic bags and refrigerate them for up to six months.
2. Prepare a nursery container. Ideally, you should start passion fruit vines in a separate, protected container and later transplant them to your prepared garden spot. Choose a container that is no larger than 1 square yard (90 square centimeters).
- Fill the container with a soil mixture made from equal parts compost, topsoil, and coarse sand. Fill the container with 4 inches (10 cm) of this mixture.
3. Dig shallow furrows. Scrape a stick through the soil in your nursery container, spacing the resulting furrows 2 inches (5 cm) apart.
- These furrows will serve as shallow drains that can help prevent moisture from drowning the seeds or their budding roots.
4. Sow the seeds. Place the seeds 1/2 inch (1 cm) apart from one another inside each furrow. Protect the seeds by covering them with a very thin layer of your soil mixture.
- Immediately water after planting the seeds. Moisten the soil, but do not drench it.
- After planting the seeds, all you need to do is provide an occasional sprinkle of water when the surface of the soil dries out.
5. Transplant the seedlings. When the seedlings grow to a height of 8 to 10 inches (20 to 25 cm), they are ready to be transplanted into a permanent location in your garden.