Here are seeds of one of the 3 hardiest passionflowers. The hardiest species is Passiflora lutea, which is native to PA, OH, and numerous other states, next is the popular Passiflora incarnata, which is native to the south and eastern US, and is hardy to USDA zone 5 or 6. Then is Passiflora caerulea which is native to South America, and is rated as hardy to USDA zone 6 or 7, depending on the source. These Dark Purple Form of Passiflora incarnata get gorgeous deep purple flowers on them for a long period in the summer, and like all other passionflowers, they are vines and they will climb up anything that you provide for them to climb. They grow best in full sun, and they prefer normal moisture levels, and actually prefer to be on the dry side in the winter.
