They grow well in a standard peat moss/sand which can be anything from 50% to 70% peat moss. There's no need to fertilize, as the plant relies on insects for food.
Passiflora ambigua or Passion Flower is a very rare Passiflora that grows very fast and becomes very big. The flowers have pink petals and sepals, the filaments are white streaked with red and purple. They measure 10-13 cm in diameter and spread a very unpleasant smell.