A further 12 areas of Welsh Government Woodland Estate sites were also agreed by the Minister to join the National Forest.
Mae Cyfoeth Naturiol Cymru hefyd wedi cynnig 12 ardal o Ystâd Goetir Llywodraeth Cymru a fydd yn ymuno â'r rhwydwaith, gan ychwanegu bron i 24,000 hectar.