Bio - Nata is produced from Streptomyces lydicus, a naturally occurring bacterium that is commonly found in soil environment. The bacterium works by colonizing the growing root tips of plants and parasitizing root decay fungi such as Fusarium, Rhizoctonia, Pythium, Phytophthora, Phytomatotricum, Aphanomyces, Monosprascus, Armillaria, Alternaria solani, Pyricularia, Monilinia, Colletotrichum, Cladosporium, Botrytis, Sclerotinia, Postia, Verticillium and Geotrichum. Other target pests include powdery mildew and fungal pathogens that attack plant foliage. The bacterium may also produce antibiotics that act against these fungi. Streptomyces lydicus is a Bio-fungicide on vegetables, seeds, turf grass, ornamentals, cut flowers, bulbs and pot plants.