Rowallane Garden is a National Trust property located immediately south of Saintfield, County Down, Northern Ireland on the A7 road.
[2] It opened on 16 May 1956 by Cynthia Brooke, Viscountess Brookeborough after being taken over by the National Trust in July 1955.
The estate house is the headquarters of the National Trust in Northern Ireland.
He built a walled garden, created the Pleasure Grounds and planted many trees.
In 1903 the garden passed to his nephew, Hugh Armytage Moore.