Fri. Mar 14th, 2025
Purple Passionflower Plant Profile
Purple passionflower, Passiflora incarnata, blooms at Shaw Nature Reserve. Photograph by Bailie Fischer.

Whereas most passionflowers are native to the Neotropicos, the showy blooms of the Missouri-native purple passionflower can add a unique contact to your property backyard.

Passiflora vifolia ‘Scarlet Flame’ blooms within the Climatron on the Missouri Botanical Backyard. Most passionflowers develop in tropical climates. Photograph by Tom Incrocci.

What are passionflowers?

Passifloraceae, the passion-flower household, includes greater than 650 species. The flowering crops can develop as small bushes or shrubs or as vines that climb utilizing tendrils. Many passionflowers produce edible fruit and a dozen species are cultivated commercially.

Passionflowers have a “corona” or crown made up of many coloured filaments on the base of the petals. This reminded religious early Catholic explorers of Christ’s crown within the crucifixion story, or ardour, giving rise to the identify we use right now.

Almost all of those species are within the tropical Americas, with a small handful in Southeast Asia.

Three purple passionflowers bloom among green foliage, showing their native habitat.
Purple passionflowers in bloom of their native habitat. Photograph by Steve R. Turner.

The place Are purple passionflowers from?

Purple passionflowers, Passiflora incarnata, are native of the Southeastern U.S., together with southern Missouri. They’re one among solely two native passionflower species within the Midwest and Southeastern U.S. The small yellow passionflower, P. lutea, is the opposite.

Within the wild, purple passionflowers often develop in sandy soils, low moist woods and open areas. One of many hardiest passionflowers, they’re simply cultivated.

A close-up photo of a purple passionflower, showing its unique purple and white tendrils.
A detailed-up take a look at the purple ardour flower. Photograph by Gerrit Davidse, courtesy of TROPICOs.

What does it seem like?

The purple passionflower is a climbing vine with putting flowers.

The blooms have a fringed flowers with white or pale purple petals. High-quality, wavy white and purple rays of filaments lengthen from its central corona. The flowers bloom from July to September.

The green egg-shaped fruit of a purple passionflower.
The purple passionflower’s inexperienced fruit, generally referred to as a maypop. Photograph by Gerrit Davidse, courtesy of TROPICOs.

Purple passionflower crops produce inexperienced egg-shaped fruits generally referred to as “maypops.” “Maypop” comes from the Native American phrase for the species, maracoc, which Captain John Smith famous in 1608. The fruits additionally make a loud popping sound when stepped on.

A bee covered in yellow pollen sits on the bloom of. a purple passionfloewr
A bumblebee coated in pollen sits on a purple ardour flower. Photograph by Garret Davidse, courtesy of TROPICOs.

Drunk bees?

Carpenter bees, a bumblebee doppleganer, tailored to pollinate purple passionflowers.

Human observances, courting again to even the nineteenth century, describe bees getting “drunk” on the nectar of ardour flowers.

It’s true that nectar can ferment. Yeasts naturally ferment the sugars in nectar into alcohol. Analysis exhibits that many or most pollinators will proceed to go to the flowers that comprise ethanol.

However, bees are usually not ingesting deliberately on the lookout for alcohol or ingesting to extra. As an alternative, small quantities of alcohol can simply have an effect on their tiny our bodies.

Passionflower leaves, that are meals for fritillary butterfly caterpillars. Photograph by
David Stang, courtesy of Tropicos.

Different animal use

 The caterpillars of Missouri native variegated fritillary butterfly, Euptoieta claudia, feed on the purple passionflower’s leaves.

Gulf fritillary butterflies, Dione vanillae, additionally eat purple passionflowers. These butterflies are native and comparatively frequent within the Southeastern U.S. and South America, and on uncommon events migrate as far north as Missouri. Regardless of its identify, this butterfly is just not technically a Fritillary butterfly, however extra carefully associated to longwings like postman, which all feed on passionflowers.

The seeds are dispersed by fruit-eating animals together with foxes, skunks, opossums, and rabbits.

Human Use

Ripened maypops are edible. To make sure the fruit is ripe, you may wait harvest till they fall off the high-quality. The fruit’s taste is much like tropical passionfruit, however not fairly as candy. There’s a lot variation within the style, nevertheless, with some tasting skunky.

Many individuals prefer to make maypop jam or jelly. Different maypop recipes embrace baked items, like a fruitcake, cocktails or mocktails, and vinaigrettes.

Purple passionflower comprise a gentle sedative. This comes from harmane alkaloids, which could be good for insomnia and nervousness.

Purple passionflowers bloom in the Whitmire Wildflower Garden at Shaw Nature Reserve where readers can see them for themselves.
Purple passionflower, Passiflora incarnata, in bloom within the Whitmire Wildflower Backyard at Shaw Nature Reserve.

Including passionflowers to your backyard

Purple passionflowers are fast-growing and simple to take care of. The crops develop properly in full solar and half shade. Dwelling gardeners can practice the vine to cowl trellises, arbors, partitions or fences. The plant spreads by root suckers and may develop to cowl giant areas. The roots unfold aggressively and may shortly take over an area!

Search for these and different native beauties within the Whitmire Wildflower Backyard at Shaw Nature Reserve!

Catherine Martin
Senior Public Data Officer

Many due to Chris Hartley, Supervisor, Residing Collections, Schooling and Amenities on the Butterfly Home, John MacDougal, Affiliate Backyard Scientist, and Wendy Applequist, Assistant Scientist within the Backyard’s Willam L. Brown Middle for Ethnobotany, for data contributed to this weblog.

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