Passiflora caerulea is commonly called Passion Flower. It is a tender perennial that is very exotic and can climb 180 inches or more. It produces large 4 inch pale blue flowers and edible fruit. Passion Flower is native to Southern Brazil and Argentina and has become popular in the southern part of the United States. For gardeners living in colder climates, some choose to winter the plant indoors. In colder climates, it will drop its leaves but in semi-tropical areas it will be evergreen. Pruning it each year will help promote flowering. Passion Flower seed can be slow to germinate. Some people recommend soaking the seed in some Passion Flower juice as the acid helps break the shell of the seed. It is best to start the seed indoors in the late winter. Press the seed into the soil and cover with 1/4 inch of soil. With a temperature of 75F, germination normally occurs within 90 days. Harden off the seedling once it has 4 – 5 leaves. Transplant the young plants outdoors after danger of frost has passed, spacing the plants 18 inches apart. Grow in full sun in moist, well-drained soil. Passion Flower needs to be well watered through the summer. It is best to water it deeply but infrequently to encourage deep root growth.