Prior to the arrival of barbed wire and sheep netting, all hedgerows would have been maintained by hand, and appropriate management continues to be essential if they are to survive.
Cyn dyfodiad y weiren bigog a netin, roedd yn rhaid cynnal a chadw’r holl wrychoedd, a rhaid eu rheoli’n briodol o hyd os ydyn nhw i barhau.