Abstract: This invention provides pesticidally effective compositions related to a novel endophytic fungi named Muscodor. Specifically, the invention relates to commercially useful formulations of Muscodor and methods for preparing such formulations. It also provides various synthetic pesticidal mixtures of volatile organic compounds isolatable from Muscodor grown on various substrates. Also provided are methods for inhibiting the growth of organisms, such as microbes, insects, and nematodes by exposing such organisms or the habitats thereof to the above Muscodor-related compositions.