150 Days to maturity. Pachyrhizus erosus . Thai Jicama Seeds. Annual, Open Pollinated. This Asian variety of jicama yields larger tubers than Mexican Jicama. It has sweet and crisp light-colored flesh, and tan to light brown skin. This larger variety can reach up to 5 or 6 inches in width, and 5 pounds in weight in warmer climates, smaller in cooler areas. The roots develop fully after flowering. Roots are edible. PLEASE NOTE: Leaves and seed pods are poisonous! Other names for this variety include True Jicama and Yam Bean, and in the original Thai, Man Kaeo. Approx 140 seeds / oz.