On Wednesday 18th February 2026, Aberclwyd Manor will be opening from 11am until 4pm for the NGS. Aberclwyd Manor, Derwen, Corwen, Denbighshire, Wales, LL21 9SF. This is a four acre garden on a sloping hillside, overlooking the Upper Clwyd Valley. Aberclwyd Manor garden features mature trees underplanted with snowdrops, fritillaries, and cyclamen. An Italianate garden of box hedging lies below the house. There will be a plant sale at this opening; for all the details, please click here.