Garden State Bulb Stuttgarter onion bulb sets come directly from our farms and growers in the US. Each set is carefully hand-picked and checked for quality before shipment. Stuttgarter is an extremely versatile onion, with a mild and smooth onion flavor, round yellow bulbs and white flesh. Onion sets, or bulbs as they are sometimes called, are small starter onions best for early spring planting. They are ideal for use in most cooking dishes, grilling or salads. Stuttgarter is a long day onion and grows best in full sun with organically rich, well drained soil.