Pelican Flower

Aristolochia gigantea (Pelican Flower) 

Fast growing vine that can grow 15-20 ft tall with support. It has deeply cordate triangular leaves and large, oddly-shaped flowers that are really petal-less calyces that open to 6" wide by nearly a foot tall with a purple maroon backing that is netted with pink etching-like marks along veins and has a yellow-orange throat. Plant in sunny spot with summer shade. Hardy to about 30-32 degrees F or for use in a cool conservatory. A real conversation piece.{via San Marcos Growers}