Landowners and land managers should act to safeguard the public, those working with trees and our critical infrastructure from the risk posed by weakened or dangerous ash trees.
Dylai perchnogion a rheolwyr tir weithredu i ddiogelu'r cyhoedd, y rhai sy'n gweithio gyda choed a'n seilwaith hanfodol rhag y risg a achosir gan goed ynn gwan neu beryglus.