The Host Organisation will ensure a maintenance contract of at least 3 and up to 5 years duration must be let to a suitable professional contractor, following the establishment of the trees.
Bydd y Sefydliad Lletyol yn sicrhau bod cytundeb cynhaliaeth gyda chontractwr proffesiynol addas am 3 mlynedd o leiaf ar ôl i’r coed gael eu sefydlu, a hyd at 5.