Plant name: Common passionflower
Botanical name: Passiflora caerulea
Virtues: Large, ornate flowers on a sturdy vining plant that can be grown in a pot and trained around a hoop or other form.
Flower: A round, broad flower to 3 inches across, with 5 white petals, 5 white sepals and large gold anthers surrounded by delicate purple filaments.
Foliage: Dark green, handlike, to 4 inches across.
Origin: Brazil to Argentina
Cultivation: Requires full sun and warm temperatures, though it will tolerate temps as low as 50°F in winter while resting. Water freely in summer; water just enough to keep the soil from drying out in winter. Feed every two weeks in summer. Takes (requires) aggressive pruning: cut stems down to 9 inches in spring. Flowers best when its roots fill its pot, so don’t repot too often. Provide humidity by misting leaves or standing pot on a tray of moist pebbles. Passionflowers often do well in the humid environment of a bathroom.
Read more about growing passionflower as a houseplant