Seeds of this tropical tender perennial vine called Aristolochia pohliana. This exotic vine in the dutchmans pipevine family is hardy in zones 8a to 10b and blossoms best in light shade and will stay evergreen all year in the above zones. A real attraction with its huge 6 inch lime green blossoms that seem to appear overnight. The plants will grown up to 12 feet if let climb on a structure.