0 Sue B Richmond, VA on May 19, 2012 Like Clip Weeds Is there any type of natural weed killer? Displaying 1 of 9 comments See All Comments Walter Reeves Decatur, GA There is only one that can kill broadleaf weeds in a grass lawn: Bayer's Natria Lawn Weed Control. It contains chelated iron as the active ingredient. NOTE: You can drag and drop your photos to reorder them Required Comment Saving...