This is Passiflora manicata, also known as Red Passion Flower, Red Passionflower, Passion Vine, and Passionvine. This tropical climber will give you edible fruit, and the red bloom is absolutely spectacular. It likes to live in the sun or some light shade and blooms from the middle of the Spring all the way through until the middle of the Fall. USDA Hardiness Zones 9b to 11.