Organic Muir Lettuce 200 Seeds #7034 Item Upc#650348691790 45 Days. Technically a Batavian type, the light green, extra wavy leaves form dense heads at a small size and can be harvested as a mini or left to bulk up into large, heavy, full-size heads. The leaves are crisp and have excellent flavor. 200 Seeds Suitable for hydroponic systems. High resistance to downy mildew races