Passion Flower (Passiflora incarnata), commonly known as maypop, purple passionflower, true passionflower, wild apricot, and wild passion vine, is a fast growing perennial vine with climbing or trailing stems. A member of the passionflower genus Passiflora, the maypop has large, intricate flowers with prominent styles and stamens. One of the hardiest species of passionflower, it is a common wildflower in the southern United States. It is a genus of about 500 species of flowering plants in the family Passifloraceae. They are mostly vines, with some being shrubs, and a few species being herbaceous.

Most decorative passifloras have a unique flower structure, which requires a large bee to effectively pollinate. In the American tropics, wooden beams are mounted very near passion fruit plantings to encourage Carpenter bees to nest. At the same time, the size and structure of flowers of different species of passiflora vary. Some species can be pollinated by hummingbirds and bumble bees, others by wasps, still others are self-pollinating.