Blue passionflower is a twining vine that can grow to 30 ft (9.1 m). The shiny leaves are usually palmately lobed with five parts, but they can have as few as three lobes or as many as nine. They are evergreen in tropical climates, but deciduous where winters are cool. The white and purple-blue flowers which appear in summer may be as large as 4 in (10.2 cm) across. They are followed by egg-size deep orange fruits from late summer through fall.