Described herein are biopesticides having activity against Erwinia species, particularly against the fire blight phytopathogen Erwinia amylovora. The biopesticides comprise intact or vegetative cells, endospores, spores, and/or metabolites from one or more bacterial species or strains as active ingredients, wherein the vegetative cells, endospores, spores, and/or metabolites exhibit antimicrobial activity against phytopathogenic Erwinia species or Erwinia amylovora.