Fungicidal mixtures, comprising 1) a fungicidal strain (I) selected from a) the Bacillus substilis strain with NRRL Accession No. B-21661, and b) the Bacillus pumilus strain with NRRL Accession No. B-30087, or a mutant of these strains having all the identifying characteristics of the respective strain, or a metabolite produced by the respective strain that exhibits activity against plant pathogenic fungi, and 2) at least one chemical compound (II), selected from the active compound groups A) to F): A) azoles； B) strobilurins； C) carboxamides； D) heterocyclic compounds； E) carbamates； F) other fungicides； in a synergistically effective amount, methods for controlling harmful fungi using compositions of components 1) and 2), the use of a component 1) with acomponent 2) for preparing such compositions, and also fungicidal agents and seed comprising such compositions.
