FRESH TREE MOSS 1 square foot: In this box you will receive beautiful green moss. This moss is clean and easy to use. Sheet moss, live sheet moss, green sheet moss, live moss. you will receive beautiful green moss. This moss is clean and easy to use. This moss ranges from ¼ to ½ in. thick, and has a length that ranges around 2 to 6 feet long, and approximately 6 inches wide. This is untreated all-natural moss, shipped directly to the customer. Has a shelf life of 2 to 3 weeks if kept refrigerated. Sheet moss, live sheet moss, green sheet moss, live moss for terrariums.