the original interiors. Grounds Parkland was laid out around the castle from the late 18th century. David Smythe, Lord Methven planted many of the woodlands, and a walled garden was constructed in 1796. In 1830 a pinetum, an arboretum consisting of conifers, was established, and is considered the first in Scotland. David's son William continued to expand the estate and constructed glasshouses. Although the woodlands continued to be managed into the 20th century, the gardens were neglected and numerous trees felled, including much of the pinetum, in the 1950s. The largest surviving tree is the Pepperwell Oak, with a girth of , as measured in 1985. In 1883 this tree was thought to be already 400 years old. The parks and gardens are listed in the Inventory of Gardens and Designed Landscapes in Scotland, the national listing of significant gardens. References Houses completed in 1664 Castles in Perth and Kinross Houses in Perth and Kinross Category A listed buildings in Perth and Kinross Listed castles in Scotland Inventory of Gardens and Designed Landscapes James Gillespie Graham buildings 1664 establishments in Scotland