Passiflora, or passion flower, is a vining perennial herb native to the warmer regions of the Americas. The uniquely-designed fragrant flower crown of passiflora may be pink, blue or purple. The blooms last one day, although the vine will continue to produce blooms all summer. The flower, leaves and stem of passiflora are dried for medicinal use as a sleeping aid, mild sedative and to alleviate pain. Passiflora is cold hardy in USDA zones 5 through 9, with the vine dying in winter and colder zones and remaining evergreen in warmer zones.
Plant passiflora in well-drained soil where it receives full sun and can climb a trellis, fence or wall.
Apply 2 to 3 inches of mulch, such as wood chips or leaf mold, around the base of the vine to cover the root ball. Keep the mulch about 2 inches from the stem of the plant. Mulch will help to retain moisture and restrict weed growth.
Water daily the first two weeks after planting. Continue to water regularly but with declining frequency, perhaps twice a week for two weeks, once a week for two weeks and then only every seven to 10 days, if there is no rain.
Fertilize with a low-phosphorus fertilizer, like a granular formula of 15-0-15. Follow the manufacturer's instructions for quantity and apply the fertilizer two or three times each year, with the first application in spring and the last in autumn.
Prune after blooming for balance or too keep the vine contained. Look for new growth off an old stem and then cut the old stem above the new growth to increase the width of the vine. Cut the vine to the ground if it has become overgrown or weather-damaged.