Passion Flower Seeds
USDA Zones: 8 - 10
Height: 96 - 180 inches (vining)
Bloom Season: Summer and fall
Bloom Color: White with blue
Environment: Full sun
Soil Type: Moist, well-drained, pH 6.1 - 7.5
Average Germ Time: 28 - 90 days
Light Required: No
Depth: 1/4 inch
Sowing Rate: 1 seed per plant
Moisture: Keep seed moist until germination
Plant Spacing: 18 inches
Care & Maintenance: Passion Flower
Passion Flower (Passiflora Caerulea) - What an exotic, lovely plant for your garden! Grown from Passion Flower seeds, this vining perennial can grow to 180 inches or more, and it produces large, 4 inch pale blue blossoms. Passion Flower fruit are egg-shaped, orange and edible but not very noteworthy. Passion Flower Vine is native to Southern Brazil and Argentina, and is popular all the way to the southern United States. This variety can be grown further north with moderate success and is hardy down to 10 degrees F. If it dies back due to a severe freeze it has been known to grow back from its deep roots. Many gardeners will bring their blue Passion Flower Vine indoors each winter. Passion Flower is an evergreen in tropical or semi-tropical regions, but as the winters become cooler it will drop its leaves. You do need to prune new growth occasionally to promote flowering.
Gardeners grow Passion Flower from seed, but the flower seed can be slow to germinate. It actually has a chemical in the seed to keep germination slow. It is recommended to soak the flower seed 24 hours before planting, and sow the Passion Flower seeds 1/4 inch deep in good compost or potting soil. In place of soaking in water, you can soak them in pulpy passion fruit juice. The acid helps break down the seed shell and helps in germination. Keep soil damp, but not too wet. It is best to start Passion Flower seeds in containers. Once Passion Flower seedlings have 4 - 5 leaves, they can be hardened off and transplanted into the garden. Passion Flower plants need to be well watered through out the summer months, watering infrequently but deeply to encourage deep root growth. During the winter months keep the soil on the dry side so it will go semi-dormant. Must be planted in well-draining soil mix, equal parts gravel and soil.