Johnsons' Leek Autumn Mammoth 2 Snowstar Seeds produce crops with high yields. These leeks are exhibition quality with shanks that are long, thick and white and are produced over a long season. They're also very frost resistant, keeping the crops in top condition for longer. Sow indoors from January to February or outdoors from March to April ready to harvest between October and March. Average pack contains 150 seeds. Warning:Seeds should not be eaten. Store out of reach of children and pets. Always read the instructions before use.