Abstract: One object of the present invention is to provide means for readily attaining a large scale cultivation of sphagnum moss under various conditions, in other words, means for establishing a sphagnum field under various conditions. Specifically, the present inventors have found that the above object can be attained through provision of a sphagnum cultivation base having a shape-imparted, aggregated mass of dried sphagnum and one or more units of live sphagnum whose stem portions have been aligned in bunch(es), such that the bunch(es) of live sphagnum stem is/are in contact with the aggregated mass of dried sphagnum, that the growth point of of live sphagnum is substantially exposed from the aggregated mass of dried sphagnum, and that the aggregated mass of dried sphagnum is capable of being brought into contact with water of a water basin, and through construction of a system on the basis of the base.

Abstract: A fixed moss plant material including a composition which contains ground paper and/or a paper precursor, and fine soil matter and a composition which contains ground paper and/or a paper precursor, fine soil matter, and a moss plant, wherein the latter composition is fixedly laid atop an upper surface of the former composition. Making use of a moss plant, the present invention enables provision of a material returnable to nature which can be produced at lower cost.