Organic growers have a limited number of products they can use for control of insect pests. In this study, the OMRI-listed biological insecticide XenTari* DF was tested for efficacy in control of imported cabbage worm and cabbage looper in collards. A XenTari* only program provided significant control of a heavy pest infestation compared to the untreated check. This study indicates that XenTari* can be an effective stand-alone insecticide for control of Lepidoptera pests