Mae Llywodraeth Cymru hefyd yn cefnogi treialon dros ddwy flynedd ym Mhrifysgol Abertawe, gan edrych ar reoli'r clymog yn gemegol.  Mae'r treialon maes hyn y mwyaf o'u bath erioed yn Ewrop a Gogledd America, a dylent roi gwybodaeth ychwanegol i helpu i reoli'r chwyn hwn.
The Welsh Government is also supporting a two-year trial at Swansea University examining the chemical control of knotweed.  These knotweed field trials are the largest of their kind ever undertaken in Europe or North America and should provide additional information to aid the management of this weed.