Passion Flower or, "the maypop" was named by missionaries in the 1500's. They named it the passion flower because the flower was thought to represent Christ's crucifixion. Start your seeds in early spring. It requires patience to grow and care for passion flowers. Some seeds will germinate in two to four weeks, whereas others will take up to a year to germinate. Once it begins to grow, it can take more time for the first flowers to appear.
Select your seeds. If available, fresh seeds germinate the best. The longer they have been stored, the less chance they will germinate.
Sand one side of each seed lightly with sandpaper. This will help the seed to germinate at a quicker rate.
Choose an area to grow your seed where it remains at a constant temperature of 79 degrees Fahrenheit. Passion flowers grow well indoors are best started indoors for outdoor growth, as well.
Soak the seeds in warm water for 12 hours.
Fill your pot with well-drained compost and potting soil. Place in a 10-inch pot if growing indoors, or a smaller starting pot if you intend to transplant your passion flower outside.
Add a 10-5-20 or high potash liquid fertilizer to your soil and press each seed 1/2 inch into the soil. In a 10-inch pot, you can add two seedlings evenly spaced apart and remove the weaker seedling once it is germinated.
Add mulch to your pot, and water it just enough to dampen the soil. Care for your plant by soaking it with just enough water to moisten the soil each day. Feed with fertilizer about six to eight weeks after germination. Set the pot in a location with bright but not full sun.
If you wish to transplant your flower outdoors, dig a hole large enough for the root ball. Space multiple plants at least a foot apart. Your plants will pop back up each spring thereafter.