Our Onion (Spring) White Lisbon Winter Hardy Seeds are a favourite overwintering variety that stand well through the cold and are slow to form bulbs. Perfect for late summer sowings and early spring crops. Can easily be trimmed and then frozen for later use, handy if required for cooked dishes.Sow outdoors from March to September, ready to harvest from March to November. Average pack contains 500 seeds. Warning:Seeds should not be eaten. Store out of reach of children and pets. Always read the instructions before use.