Mae’n bwysig rhoi gwybod i’r awdurdodau am unrhyw blâu neu glefydau sy’n cael eu gweld ar blanhigion a choed mewn gerddi neu allan yn yr awyr agored. Gellir gwneud hynny drwy Tree Alert neu Borth Iechyd Planhigion y DU.
It is important to report any pests or diseases spotted on plants and trees in gardens or while out and this can be done through Tree Alert or the UK Plant Health Portal.