There are over 500 species of Passion flower and a few that bear edible fruit. These plants are tropical to sub-tropical perennial vines. They attach to trellises, arbors, fences or trees with tendrils coming from the vine. Vines in certain species can grow 30 feet long and need a lot of room. Most Passion flower vines are hardy in USDA planting zones 7 through 11 although those with edible fruit are only hardy in zones 9 through 11. A short freeze may cause die-back to the ground, but the plant will grow back in spring.
Water the vines every three days for teo months after planting. From that point on, water once a week to a depth of 8 to 10 inches through the summer. During the fall, water when only if there is no rain for two weeks or it is unusually hot or dry.
Prune vines in late winter while they are dormant. Cut off dead and weak stems back to the stems that are growing well and have buds on them. This will promote growth early in the spring. Depending on the space you have for your vine, cut to keep in bounds.
Apply a balanced general purpose fertilizer in the late winter right after pruning and then every six weeks through July, in zones 7 through 9a. Continue to fertilize through October in zones 9b through 11. The amount to apply will be determined by size of plant and whether the plant fruits or not, so follow manufacturer's directions carefully.
Place a three-inch layer of mulch around the main vine in a two-foot diameter each spring. Keep the mulch 6 inches from the trunk of the vine. The mulch will keep the area weed free and help to conserve moisture.