The present invention relates to a dispersion containing an aqueous continuous phase and a dispersed phase, wherein the dispersed phase exhibits a nano-sized self-assembled structurization and wherein the dispersed phase contains a pesticide with a water solubility at 25° C. of up to 10 g/l and a melting point of below 100° C. The present invention further relates to a method for preparing said dispersion comprising a step of contacting the components, and to a method for controlling phytopathogenic fungi and/or undesired plant growth and/or undesired attack by insects or mites and/or for regulating the growth of plants, where said dispersion is allowed to act on the particular pests, their habitat or the plants to be protected from the particular pest, the soil and/or on undesired plants and/or the useful plants and/or their habitat.