Passionfruit

Passionfruit vines need full sun for best flowering and fruiting, though a little shade helps where summers turn very hot. They grow fastest with an average season temperature of 68 to 75°F and require frost-free winters, since the tender growth is easily damaged by cold. Well-drained, compost-rich sandy loam with a pH between roughly 5.5 and 7.5 suits the plant, and soil that stays constantly wet should be avoided; the vine tolerates moderate drought by shedding leaves but has poor tolerance for salty soils and exposed, windy sites.

Because it climbs by tendrils and can put on many feet of growth in a single season, passionfruit needs a trellis, fence, or arbor to scramble over. Fertilizing two or three times a year keeps growth vigorous, and an annual pruning encourages fresh growth along with heavier flowering and fruiting. Propagation is done from seed or from cuttings.

Nematodes can seriously damage passionfruit vines, and caterpillars feeding on the foliage slow the plant's growth. Poorly drained soil raises the risk of root and collar rot, so drainage is an important safeguard. Aside from these problems, the vine's long-term health is generally not troubled by pests.

Fruit is ready to pick roughly 80 days after flowering, with the main harvest falling in late summer and early fall, though vines in places like south Florida can produce fruit year-round.

Culinary: The soft, aromatic pulp and its edible black seeds are eaten fresh or squeezed for juice, and are also used in pastries, ice cream, and other desserts; adding the seeds to snack bars has been shown to raise both their fiber and fat content.

Ornamental: The vine's large purple-and-white flowers and dense, fast-growing foliage make it valued as a screen or cascading cover for walls and fences, and the blooms attract butterflies and hummingbirds to the garden.

Medicinal: In regions where it is widely cultivated, including South America, the Caribbean, South Africa, and parts of Asia, passionfruit leaves, stems, fruit, and peel have traditionally been prepared into food, health-care products, and medicinal formulas.

Passionfruit is native to subtropical South America, with its origins traced to southern Brazil and neighboring areas of Paraguay and northern Argentina, where it grows naturally along the edges of rain forests. Missionaries in Brazil gave the plant its common name around 1700, reading the intricate flower as a symbol of the Passion of Christ. From this South American homeland, passionfruit was carried through Europe and on to Africa, Australia, and other parts of the Americas during the 1800s and 1900s, establishing it as a crop across the tropics and subtropics.