A designed landscape dating to the 1820s for John Knight, which was used as a garden by the Fortescues in the late 19th and early 20th Century. It includes a circuitous valley route that incorporates two outcrops of Spa Stone. The designed landscape was never finished.
By 1888, this area of land running along the west side of the Ashcombe stream is laid out with paths, various deciduous trees and shaded, small trees that presumably represent bushes or shrubberies. A section where several paths meet in the centre is shown as a separately enclosed piece of land and this may have been the original 'garden by the river'; the partial remains of a wall still run across the bottom of the Ashcombe valley here. The stretch of path through the woodland to the house has a hard surface and may have been wide enough for a horse-drawn vehicle, possibly providing a link to the Upper Stables. An old slate quarry within the garden may have acted as a fernery.