The Biostimulants category includes innovative products, which contain organic substances and/or microorganisms, specially designed to support the plant development throughout the plant life cycle and to improve its qualitative and quantitative yields. Applied directly on the leaves or by fertigation, the biostimulants interact punctually and naturally on the main physiological processes of the plant: some promote the creation of new roots by improving the radical absorption of nutrients, others act on the epigeal tissues of the plant, enhancing the division and cell multiplication, and influencing the different phenological stages of the plant.