2. Mae Gorchymyn Iechyd Planhigion (Coedwigaeth) 2005(1)wedi ei ddiwygio fel a ganlyn.
O.S. 2005/2517. Offerynnau diwygio perthnasol yw O.S. 2006/2696, 2008/644, 2009/594, 2009/3020, 2011/1043, 2012/2707, 2013/755(Cy. 90), 2013/2691, 2014/2420, 2015/1723 (Cy. 235), 2016/1167, 2017/1178 a 2018/1048.