Walled Garden, Gartmore House

The Walled Garden at Gartmore House is a mid-18th century structure located on a sloping site to the northeast of the house. It was built using materials from Gartartan Castle, a late 16th century or early 17th century ruinous Z-plan tower house, which is situated on the northwest side of the garden. The garden was created during the time when the Graham family was enhancing their house and grounds and developing the planned estate village of Gartmore. It is a well-preserved example of an unaltered walled garden that incorporates older materials from Gartartan Castle.

The garden features approximately 12-foot high random rubble walls topped with flat stone copes. There is a round-arched ashlar gateway on the southwest side, complete with a keystone and timber gate. The southeast gate has a pediment above it, featuring a reused fragment from Gartartan Castle, which is believed to date from 1686, although the date was not visible during the 2004 resurvey. A broad, segmentally arched gate on the northwest side is covered in ivy, and an armorial panel above it, which was noted in 1971, was not seen during the 2004 survey.

A random rubble wall divides the garden in half along a southwest-northeast axis. Early 20th century postcards indicate that there was once a series of glasshouses along the southern face of this wall, but only the brick foundations remain today. To the north of this wall, there are lean-to brick buildings with corrugated iron roofs that housed the heating system for the glasshouses, as well as potting sheds and a gardeners' room. One chimney stack from these buildings still exists.

As of the 2004 resurvey, the southern half of the garden was home to pigs, geese, and beehives, while the northern section, which is overgrown, contained one glasshouse that is likely not in its original position and is in a precarious state.