- Name: Mini Blue Glass Gem Corn - Scientific Name: Zea Mays - Color: Blue Kernels - Plant Seeds: In Spring At Temps Of 55f Or More - Harvest: 100 Days - Hardiness Zone: Annual - Plant Height: 48" - Plant Spacing: 6 - 8" - Light Requirements: Sun - Soil & Water Preferences: Average - Quantity: 20 Seeds - Other: Glass Gem Corn Is Breathtakingly Beautiful! It Comes In A Huge Variety Of Colors & Color Combinations In Translucent, Rare, Jewel Like Colors. The Colors Are Really Like Nothing Else, & While The Photos Are Beautiful, You Have To See It In Person To Really Get The Full Effect. Glass Gem Corn Makes A Fantastic Decoration, From Whole Corn Stalks To Dried Ears, Or The Shimmering Kernels Used As A Bowl Filler.