The names sheet moss and carpet moss refer to the growth pattern of the plants, which often form large carpetlike mats on soil or rocks. Hypnum has been harvested for decades and sold dry to the floral industry. Now it is being sold live for sustainable landscapes. Hypnum is a low growing versatile moss/shade plant that has a very high transplant success rate. This beautiful variety of moss is generally medium green in color and can tolerate light to moderate foot traffic. Hypnum is also the most ideal choice for creating a moss lawn.