Technical Abstract: Flowering plants in agricultural landscapes can provide ecological services, such as nectar-food for adult parasitic flies such as Tachinidae. Various cultivated, introduced/established and native potted plants-in-flower were used to bait interception traps along the wooded margins of fields planted seasonally with either feed-corn or rye. Depending on circumstances, controls consisted of traps baited with the same species of plant without flowers, a pot/area without plants or both. In most cases pots were rotated among trap-sites. Of the 14 plant species tested only 4 captured significantly more Tachinidae. At the subfamily level there were instances of significant capture of Dexiinae, Exoristinae and Tachininae. Phasiinae were essentially absent from our trap catches. Unlike simultaneously acquired parasitic Hymenoptera, “attractive” and “unattractive” plant species were not characterized by morphological characteristics (flower width, flower depth, flower density and plant height), however the present study identified particular plants that could be incorporated into regional conservation biological control programs.