Piquant flavor sets this Paris White Cos head lettuce apart from the other lettuces. Romaine Head Lettuce will add wonderful flavor, texture and crunch to salads, sandwiches and wraps. Growing 10 in. tall, it produces vase-shaped heads. Can be harvested at the baby leaf stage or mature stage. Lettuce is a cool-weather crop and grows best in spring and fall gardens. For an extended lettuce season, sow lettuce seeds every two weeks. Lettuce can also be grown in containers. 70 DAYS.