- You Will Get 15 Seeds Of Pink Glass Gem Corn Ornamental & Edible Zea Mays Vegetable Seeds. - Description: - Name: Pink Glass Gem Corn. - Scientific Name: Zea Mays. - Color: Pink Kernels. - Plant Seeds: In Spring At Temps Of 55f Or More. - Harvest: 100 Days. - Hardiness Zone: Annual. - Plant Height: 48 - 60". - Plant Spacing: 6 - 8". - Light Requirements: Sun. - Soil & Water Preferences: Average.