Your Everything Guide to Growing Passion Flower

An exotic looking tropical vine, passion flower is native to regions of the southern US. The distinctive blossoms feature an outer layer of petals topped with a disk of colorful filaments. A tall stalk projects from the middle of each flower.

A passion flower vine can grow as much as 15 feet in a year. Passion flowers are considered an invasive species in some regions, so be sure to check with your local county extension before planting.

Growing Passion Flower

Variety: Passiflora (species)
Zones: 7 to 11, grown as an annual elsewhere
Soil Type: Prefers deep, rich soil with good drainage.
Soil pH: 6.1 to 7.5
Sunlight: Full sun to moderate shade in warmer zones
Watering: Prefers evenly moist soil

Planting Passion Flower

Your passion flower will require some form of support to handle its rambling vines. A trellis, fence or arbor is preferred. Most often propagated from cuttings, passion flower seeds can take up to a year to germinate. Plants grown from seed can take years to produce blooms. Plant passion flower well after the threat of frost is past.

Passion flower should be sited where it will get at least four hours of sunlight a day, more if planted in a northern climate zone. Passion flowers also make excellent house plants when placed where they will receive bright, but indirect light.

Caring For Your Passion Flower

Passion flowers bloom from mid summer until the first frost. You plants will produce the most blooms if the soil is kept evenly moist, but not soggy. You'll want to feed your passion flower in the early spring with a 10-5-20 fertilizer and then feed it again six to eight weeks later.

Pruning should be used to keep the plant in check or to produce fuller growth. Pruning should be confined to late winter or early spring. At the northern edge of the climate range, passion flower may die back to the ground over the winter. To protect at-risk plants, don't apply fertilizer after mid-summer and make sure to mulch the plant well before soil temperatures drop.

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