The walled garden of Whitehurst House is located on the northern edge of Chirk, about 2km north of Chirk Castle. It was once the walled garden of the Castle and was laid out by Sir Thomas Myddleton II as a pleasure garden in c.1651 and was both utilitarian and ornamental.

The garden area is sub-triangular on plan, being longest along the north side but tapering to the south, covering over 26 acres. It lies on sloping ground facing south and is enclosed variously by stone and brick walls (nprn 35591). The north half of the interior is laid out in a series of terraces divided by four curving brick walls originally used for fruit growing. Whitehurst House, a banqueting house (35592), lies in the north-west corner of the garden adjacent to a derelict glasshouse. Early mapping shows a number of glasshouses at the west end of the terraces, but the present one was not then in existence. Next to it are nineteenth-century lean-to brick buildings, probably built as potting sheds and for general storage. The centre of the garden is a level area, partly overgrown, partly taken up by a playground. Near the boundary on the south side of the garden is a conical, flat-topped mount, the banks of which are planted with hazel coppice, and surmounted by a yew tree.
This was probably the site of production of most of Chirk Castle's food particularly during difficult periods like the Civil War, but also usable on status occasions for show.

Twelve semi-detatched cottages situated on the east boundary of the walled garden were built in the early twentieth century as miners' cottages.

Sources:
Cadw 1995: Register of Parks and Gardens of Special Historic Interest in Wales, Clwyd (ref: PGW(C)11).
Ordnance Survey second-edition 25-inch plan, sheet: Denbighshire XL,2 (1899).

RCAHMW, 6 July 2022