Palmer amaranth, a potentially devastating weed for agricultural production, was discovered in Preble County in late July. Since then, two additional infestations have been discovered. Over the last few years, Waterhemp, a close relative to Palmer, has been making its way through Preble County. Both weeds exhibit herbicide resistance, making control particularly difficult. These weeds will likely require farmers to change their weed control strategy in the future. To discuss these weeds and several others, farmers are invited to attend an upcoming noxious weed meeting.