Multiple award winning formula INCREASES PLANT RESISTANCE TO COLD AND FROST AntiFrost is a natural biostimulant that stimulates the production of anti-freeze proteins within the plant. These anti-freeze proteins prevent ice nucleation, and hence, cold and frost damage. approved for organic use by the Soil Association. Plants naturally protect themselves from frost and cold by producing their own anti-freeze proteins. Some produce more than others based on their genetic properties and the environment they grow in. a biological product contains thiobacillus bacteria and their production of rusticyanin, oxaloacetic acid, and pyruvic acid. These are mixed with a special blend of minerals within the formulation.