Yellow passionflower (Passiflora lutea) may be just as common in this area if not more so but due to it's small and inconspicuous flowers it just doesn't grab the attention of incarnata.
is a climber with loads of blue flowers and its now infested with butterfly larve.
Maypop (Passiflora incarnata L.), also known as 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. The Cherokee in the Tennessee area called it ocoee; the Ocoee River and...