Matures: 55 Days. One of the very best survival foods. Durable, delicious, finely-curled, bluish-green leaves on compact 15 inch plants. Maybe the most cold-tolerant food we sell. Kick around in the snow to harvest all winter long. Vitamin rich. Use raw in salads, especially after the first frost when flavor is milder, or add flavor to soups and stews. 1g. packet about 300 seeds.