10 PURPLE GRANDILLA PASSION FLOWER Passiflora Caerulea Vine Seeds BLOOM TIME: All Summer HARDINESS ZONE: 7 - 11 PLANT HEIGHT: 30 Foot Vine . . . PLANT SPACING: 6 - 8 Feet LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL / WATER: Average It is surprising how easy it is to grow this lovely exotic looking plant. It makes a wonderful houseplant and has a mint scent. It is fast growing and can grow up to 30 feet in one season!