Wild Garden Lettuce Mix 500 Seeds #70397 Item Upc#650348692384 21-45 days. Instant lettuce diversity for cut salad or fresh market racks. This is by far our most popular mix, even sold through other catalogs. Makes an interesting assortment of baby heads. 500 Seeds Plants can be spaced 6 1/2 by 6 1/2 inches for maximum yields.