what is the hardiest passiflora ?

Melis

New member
What is the hardiest Passiflora?
In their native North America the herbaceous Passiflora incarnata and Passiflora lutea are without doubt the hardiest Passiflora. They are rarely seen for sale however as P. incarnata is widespread in its native areas and is difficult to propagate from cuttings and Passiflora lutea in addition has tiny flowers.