Chemical products used in agriculture, horticulture and forestry, namely, growing media for plants, bushes, shrubs and trees; stabilized growing media for horticultural use in propagation, growing and/or cultivation of plants, bushes, shrubs and trees; growing media for plants in the form of plugs, plugs in trays, and ready-to-use mixes, each principally composed of stabilized growing media, for use in plant propagation within agriculture, horticulture and forestry, which may also contain as additional components organic and non-organic binding materials, coconut fibers, coir, and minerals and mineral wool; combined growing media for use in plant propagation, in the form of plugs, plugs in trays, and ready-to-use mixes, each principally composed of a combination of stabilized growing media, planting soil, and/or compost, and which may also contain as subsidiary components organic and non-organic binding materials, coconut fibers, minerals, mineral wool, and coir; planting soil; substrates for plant propagation, namely, potting compost, planting compost, planting soil, potting soil, growing media