Round, bolt resistant onions which keep well and have a hard skin. Sizes: 10-21 mm (A) and 21- 24 mm (C). To reduce the risk of bolting, onion sets should be stored in a warm and dry envioronme (18-20 °C is ideal). The small sized selection (G521A) is recommended for producing mature onions. The larger sets (G521C) are more likely to shoot than the smaller ones and since they grow more quickly and vigorously, are best suited for marketing green. Limited number are grown under exclusively Demeter conditions. Be sure to order in good time (When there is high demand we reserve the right to supply an alternativ).