Hardly is there a flower that evokes a sense of the tropical more than the passion flowers. P. caerulea 'Alba' is the pure white form of the is hardy blue passion flower. Bury the stem 6 inches deep to increase hardiness. Plant in well-drained soil that is not too moist or too rich to promote more flowers and less greenery. Edible, but not the most tasty, yellow fruit are sometimes produced.
Central and South America