Pollarding is generally appropriate for trees which have been previously pollarded. It involves cutting back heavily to the knuckle, where the last previous pollard point was. It can be part of an ongoing maintenance plan for certain species of tree to ensure their future health and longevity. It is an effective way of keeping large trees, for example Willows, safe and under control. Within this type of tree work, Coppicing also applies as a way of regularly containing vigorous growth of certain species, such as Hazel.