Approximately Mid Summer Maturity. Allium sativum var. ophioscorodon. Duganski Seed Garlic Bulbs. Non-GMO, annual, hardneck, purple stripe group garlic bulbs. Suitable for growing in garden plots, raised beds, and containers. This high-yielding hard neck produces large, attractive purple bulbs of garlic that store exceptionally well for months. Garlic is an Allium family member, along with onions, leeks, chives, and ornamental alliums. Plant garlic this fall for low-cost culinary flavors next year! 3 Bulbs Per Bag.