1) Entomopathogenic fungi were collected from the root balls of various plant species found in extensively managed Swiss meadows. 76% of collected plants contained entomopathogenic fungi. 2) Five isolated entomopathogenic fungi strains were shown to effectively combat common soil pests like grubs and crane fly larvae. 3) Testing also showed that the most effective isolated fungi strains were capable of combating cabbage fly infestations in radish plants, keeping plants healthy while untreated plants were entirely devoured.