Giant Granadilla may be the most spectacular of all the world's passionflowers. Its huge fragrant flowers are red and purple with a fancy crown of filaments in the center. They grow 5" to 7" across and smell wondrous. Passiflora quadrangularis comes from tropical Central America and needs the warmth of zone 10-11 to be its spectacular self. In warm areas, this robust climber grows 30' to 50' in a season and requires serious support. In addition to the spectacular flowers, it's known for enormous golden fruits that weigh up to 9 pounds. The ripe fruit is eaten fresh or used in drinks; green fruit is eaten as a vegetable. This exotic perennial vine is somewhat cold-hardy, surviving temperatures to 35°F for short periods. In tropical areas it can be grown in your garden. Elsewhere, it will thrive in a greenhouse or indoors in a sunny south-facing window. Passiflower seeds are a challenge to germinate and may take weeks or months to sprout. Soak them in orange juice or beer for a couple of days, then sow them on the surface of a peaty compost and barely cover. This species needs light to germinate. And patience! 10 seeds