High tunnel tomato production continues to increase every year in Ohio, however the protected environment within high tunnels creates conditions conducive for the development of soilborne disease complexes. A soilborne disease complex consisting of corky root rot (Pyrenochaeta lycopersici), black dot root rot (Colletotrichum coccodes), Verticillium wilt (Verticillium dahliae), and root knot nematode (RKN; Meloidogyne incognita and M. hapla) has become an emerging problem in tomato high tunnel production in Ohio. A survey was conducted to determine the presence and distribution of this soilborne disease complex, with the purpose of providing growers with effective management strategies. Farmers were provided with a soil sampling guide and samples were submitted to regional produce auctions or to the OARDC. A bioassay was conducted to assess the presence and severity of root rot, taproot rot and RKN galling. DNA was extracted from soil samples and species-specific primers were used to identify each pathogen. P. lycopersici was detected in 32 of 68 high tunnels (47%) and 17 of 34 farms (50%). C. coccodes was detected in 61 of 68 high tunnels (90%) and 33 of 34 farms (97%). V. dahliae was detected in 31 of 68 high tunnels (46%) and 25 of 34 farms (74%). RKN was detected in 32 of 68 high tunnels (45%) and 19 of 34 farms (56%). Growers were informed of the presence of soilborne pathogens and personalized management recommendations were given to each grower.