On Wednesday 19th August 2026, Aberclwyd Manor will be opening from 11am until 4pm for the NGS. Aberclwyd Manor, Derwen, Corwen, Denbighshire, LL21 9SF. This is a four acre garden on a sloping hillside, overlooking the Upper Clwyd Valley. Aberclwyd Manor garden features mature trees, shrubs, roses, and perennials. An Italianate garden of box hedging lies below the house and there’s also a pond and an orchard. There will be a plant sale at this opening; for all the details, please click here.