Little is known of the early history of the gardens, but it is assumed from the great age of many of the specimen trees that they were laid out at the time the house was built in 1703-05. The gardens lie to the north and east of Mertoun House, and extend to about 26 acres. Extensive herbaceous borders, very interesting tree plantings and a wonderful old walled garden. This is a fabulous site on the banks of the river Tweed. (N.B. Only open on Saturdays, Sundays and Mondays – and public holidays.)