Passiflora edulis aka Passion Fruit

Passiflora edulis, or passion fruit, belongs to the Passifloraceae family. This evergreen vine comes from Brazil, Paraguay, and northern Argentina. It grows along rain forest edges in its native range. Growers raise it for fruit in warm regions worldwide. Productive vines often live for three to four years. Plants may flower and bear fruit within their first year.

The vine grows fast and forms a dense cover. Coiling tendrils grip nearby plants or a garden support. Garden plants reach about 13–26 feet (4–8 m) tall. Their spread can reach 8–13 feet (2.5–4 m). The support helps set their final height and width. In nature, total vine length can exceed 100 feet (30.5 m). Young stems are green, and older stems become woody. Glossy green leaves grow up to 0.66 feet (0.2 m) long. Seedling leaves are oval, while mature leaves have three deep lobes. Leaves grow singly, in an alternate pattern along the stems.

White flowers have purple filaments around their centres. The RHS describes bowl-shaped blooms with green undersides. Flowers appear in summer and may continue into early fall. Each flower lasts about one day. Bees pollinate the flowers, and the plant also attracts butterflies. Oval fruit follows the blooms in summer and autumn. The tough skin can be yellow or purple. People eat the ripe pulp fresh or use it cooked. Its sweet, tart taste suits juice, syrup, cakes, and sauces. The seeds also yield an edible oil. PFAF and Useful Tropical Plants report no known hazards. This does not establish the safety of every plant part.

Give outdoor plants full sun for good bloom and fruit crops. Keep the soil moist, but allow water to drain. The vine grows in sand, loam, or clay. It tolerates acidic through slightly alkaline soil, but handles salt poorly. Sources differ on drought tolerance, from limited to moderate. Hardiness advice ranges from USDA zone 9b upward to zones 10–12. Frost can harm young growth and kill exposed vines. The RHS assigns H1A and advises frost-free glasshouse growing in Britain. Use loam-based, peat-free compost, with shade from harsh sun under glass.

Train the vine over a fence, trellis, arch, or pergola. Its dense growth can screen a boundary or trail down walls. Keep it from escaping cultivation where local guidance urges caution. Caterpillars eat the leaves and can slow growth. Nematodes and fungi can harm the roots. Under glass, watch for mites, whitefly, mealybugs, and scale insects. Viruses can affect plants, and honey fungus occurs rarely. Seeds, cuttings, and layering provide ways to raise new plants.