The present invention is an organic composition for the protection of crops against black frost and the method for its application over the crops. The novelty of this invention consists not only in the composition of the product itself, but also in the calculation of the percentages of the organic components that intervene in the product and, in the determination of the moment when the product must be applied over the crops. This invention is a very simple composition where the calculation of the percentages of the two main components is obtained by multiplying the "Filo Index" (real humidity and temperature / historical values of humidity and temperature for the area) by the component and, the percentage of the second component is calculated by subtracting the first result from 100.
