The chemical technology of fabrication of nutrient medium for growing fungi and plants will solve urgent problems of the ecologically clean use of the cellulose-containing wastes, formed in large amounts during textile processing of cotton and flax fibres. The conditions for fabrication of composite materials of any geometric shape and size having a fired density, porosity, moisture content, and air permeability were developed. Designing a nutrient medium will allow creating aesthetically attractive articles for decorating interiors which meet the requirements of modern design.