Fungicidal and bioregulatory mixtures, comprising (1) epoxiconazole of the formula I ##STR00001## or salts or adducts thereofand(2) prohexadione-calcium of the formula II ##STR00002## in a synergistically effective amount, methods for controlling pathogenic harmful fungi and for regulating the growth of plants using mixtures of a compound I and at least one active compound II and the use of a compound I with active compounds II for preparing such mixtures, and also compositions comprising such mixtures.