Passionflower Vine

Exotic passionflowers may appear as if a tropical plant, but they will actually be grown almost anywhere, including much colder areas. In fact, you’ll even find these seemingly-delicate vines growing along the side of the road—some passionflower species are invasive in warmer climates.

The Passiflora is native to North America and South America and contains quite 500 species, therefore the common name passionflower can actually describe variety of various plants. Some are shrubs, annuals, perennials, and even trees; some also produce edible fruits. all of them share exotic flowers that remain open for less than a few day. The flower features a wide, flat petal base with five or 10 petals during a flat or reflex circle. Passionflowers are rapid growers and are best planted in spring or early fall while it’s still warm. Where they’re hardy, passionflowers are usually trained on a trellis, fence, or other vertical structures—in regions where they’re not hardy, passionflower plants are often grown in pots and moved indoors for the winter.

new passionflower budding
Botanical NamePassiflora spp.
Common Names Passionflower, passion vine, maypop, granadilla
Plant TypePerennial vine
Mature Size6–30 ft. tall, 3–6 ft. wide
Sun ExposureFull sun, partial shade
Soil TypeMoist but well-drained
Soil pHNeutral to acidic
Bloom TimeSummer
Flower ColorPurple, blue, pink, red, white
Hardiness Zones5–9 (USDA)
Native AreaNorth America, South America

Passionflower Care

Most species of passionflower are easy to grow—so easy, in fact, that they’re sometimes considered invasive if left to their own devices. Typically, they ought to be grown fully sun to partial shade, in average soil that’s well-drained. A sheltered location, like against a garden wall, is suggested for several species, which may be damaged by major winds or harsh weather. If you’re bringing your passionflower indoors for the winter, it’ll probably go semi-dormant and appearance but ideal, but it should perk up again within the spring.

In addition to being a gorgeous flowering vine for your garden, passionflower also has celebrated medicinal uses. Native Americans have long used passionflower to treat a spread of ailments, like wounds, earaches, and liver problems, and it’s also thought to be beneficial in treating insomnia1 and reducing stress and anxiety.2


To keep your passionflower vines healthy and blooming, plant them full sun to partial shade. In extremely hot climates, some afternoon shade is appreciated. Passionflowers generally need a minimum of four to 6 full hours of sunlight each day (or more in cooler climates). If you bring potted specimens indoors for the winter, give them bright, indirect light and keep them far away from drafts.


The soil you plant your vines in should be well-draining, but rich and moist. Soil pH isn’t terribly important and may be within the neutral to the acidic range, anywhere from about 6.1 to 7.5. The addition of compost to the planting hole will help provide nutrients, and mulching around the plant’s base will assist in retaining moisture without having the plant become waterlogged. Typically, some sort of support is required for the vines to grow on—a trellis, a structure, or maybe another plant.


Passionflowers should tend to a deep watering immediately after planting. Beyond that, they typically thrive with one or two waterings per week throughout their seasonconfirm to supply about an in. to an in. and half water hebdomadally if there’s no rain; they are doing not handle drought well.

Temperature and Humidity

Passionflower plants love warm weather and should need winter protection in cooler regions. In zones cooler than zone six, they often die within the winter unless you bring them indoors. Plant them in a neighborhood that’s shielded from wind, as a robust wind can damage stems and burn leaves. additionallythey are doing best in areas with moderate to high humidity.


Passionflower vines are heavy feeders and can enjoy a daily light application of balanced, general-purpose fertilizer with equal proportions of nitrogen, phosphorus, and potassium. Fertilize the plant before new growth emerges in early spring, then repeat every four to 6 weeks until early autumn.

Passionflower Varieties

There are many sorts of passionflower, though they mostly differ in color and appearance, not care. a number of the foremost popular cultivars for landscaping and gardening include:

  • Passiflora caerulea (blue passionflower)
  • Passiflora coccinea (red passionflower)
  • Passiflora incarnata (purple passionflower)
  • Passiflora alata ‘Ruby Glow’ (fragrant granadilla)

Pruning Passionflower

Passionflowers are low maintenance during their season and don’t got to be deadheaded. Pruning is completed more to stay the dimensions of the vine in-check, remove deadwood, and encourage fuller growth.

Pruning are often wiped out late winter or early spring—in cooler climates, the vines may die down to the bottom anyway. These plants flower on new growth, so confirm to prune them before growth begins each spring so as to preserve the season’s blooms.

How to Grow Passionflower from Seed

Most sorts of passionflower are often purchased as seedling plants. they will even be propagated from either seed, softwood cuttings, layering, or rhizomes.

  • To save seed, allow the fruits to ripen completely. Open the pods and take away, clean, and dry the seeds before storing them. If you’re saving seeds from a hybrid variety, remember that they’re going to not grow true from seed, but will revert to the looks of the parent species.
  • Passionflowers seeds are often slow to germinate. Start your seed indoors by scarifying them and soaking them for one to 2 days in warm water. Discard any floating seeds, as these aren’t viable.
  • Place the well-soaked seeds on the surface of damp potting mix, pat down, but don’t cover since they have light to germinate. Place the pot into a bag and seal to retain moisture. If you’ll provide bottom heat (via a heat mat) to the pot, you’ll speed up germination.
  • It can take anywhere from 10 to twenty days for passionflower seeds to sprout. Keep the soil moist in the least times. When sprouts do appear, keep them out of direct sunlight until there are true leaves. Grow lights are your best light during this stage of the method.
  • Harden off the plant for 10 days to 2 weeks by slowly introducing it to outdoor conditions, extending the quantity of sunlight it receives every day.
  • Transplant once the plant gets large enough and possesses several sets of leaves.
  • If direct-sowing seeds outdoors, wait until the danger of frost has passed and temperatures reach a minimum of 55 degrees Fahrenheit.

Potting and Repotting Passionflower

Many gardeners like better to grow their passionflowers in containers, where they’re going to grow quite happily and provide you with the convenience of having the ability to maneuver them to a sunnier site or maybe bringing them indoors for the winter. Additionally, growing in pots prevents passionflowers from spreading uncontrollably.

To successfully pot your passionflower, use a potting soil rich in nutrients, and confirm the pot has several large drainage holes at its base. Keep the soil moist, but don’t allow the roots to take a seat in water. Plants grown in containers will need more regular feedings since they’re watered more frequently and nutrients typically rinse out because the soil drains. If you’re bringing the plant indoors for winter, trim the stems right down to one or two feet high before moving it.

Common Pests and Diseases

The more tropical the climate, the more pests there are to attack your passionflower plants, including scale, spider mites, and whiteflies.3 you’ll plan to control any infestations with an insecticide.

Leaf spot is another potential issue and is usually caused by a fungal disease. To rid your plant of it, remove affected leaves to slow the spread and treat the plant with a fungicide if necessary. plant disease is additionally common in soils that don’t drain well4

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