Passiflora incarnata, or Maypop, is a deciduous vine and the cold hardiest of the Passion flower family reaching 4 metres in length with deeply lobed leaves and large purple fringed flowers. Their USDA hardiness is rated zones 6-9 but best in the UK grown in a cool greenhouse to prevent winter root rot. Move the plants to a cool frost free glass house for the winter gradually withholding water until all foliage dies off, when the plant should be trimmed back. When new growth starts in the spring, repot and resume watering.
