The Rock Garden slopes down the valley from the house to Debdon Burn and the Pinetum. It's comprised of three sections; the west garden, which contains fine specimens of heath and heather, the lower west garden that has plantings of both evergreen and deciduous shrubs, and the south garden that has plantings from the warmer parts of Europe and New Zealand, along with azaleas. Apart from the south garden, the Rock Garden is completely man-made.