Plant Guard is a potassium silicate supplement, which may increase the rigidity of your plant's cell walls and strength branches to better support massive flowers. The thicker cell walls provide protection against sap sucking insects such as spider mites or aphids. Plants express increased resistance to various pathogenic fungi such as grey mould and powdery mildew. Plant Guard is like liquid carbon fibre for your plants, virtually fortifying cells from the inside out. Cells are the building blocks of the plant's framework. Strengthening the cell walls helps the plant build strong stems and branches that supports the weight of the large flowers associated with modern plant genetics. Stronger cells form thicker stem. The thicker cell walls create bigger stalks with bigger pathways that uptake and transport more water and more nutrient. This fortifying and multiplying effect facilitates bigger plants and faster growth. Add Plant Guard at 0.5 mL/L prior to adding nutrients. Discontinue Plant Guard two weeks prior to harvest.