(Zea mays) 40 seeds per pack. An amazing edible and ornamental corn, Glass Gem is famous for its brilliantly colored ears, filled with literally every color in the rainbow. Ears grow to 3-8″, with small popcorn kernels that can be popped or ground into corn meal. Spectacular and rare! Seeds are from carefully cultivated, isolated plants. #3657 Open pollinated. 110 days. Detailed seed germination instructions.