The Abbey grounds contain a great variety of trees and flowers, mostly planted during the eighteenth and nineteenth centuries. Most impressive of all are the Rhododendrons, which flower in great profusion during the months of May and June. Also worth noting are the fine oak trees which are said to be in some cases specimens of the primeval oak forest which once covered most of Ireland. These can be seen as you drive up the front avenue. Among these oak trees is the famous Ilchester Oak, on the left of the avenue, opposite the first lake. There are five artificial lakes in the grounds, mostly stocked with trout. For some years now the property has been a wild-life sanctuary.