Polwarth is a village and parish in the Scottish Borders area of Scotland. It is located at, between Greenlaw and Duns, in the former county of Berwickshire. Other places nearby include the Blackadder Water, Fogo, Langston, Longformacus, Marchmont House and Marchmont Estate, all in the Scottish Borders Council Area. Polwarth Parish Church was built in 1703, replacing a 13th-century building. Polwarth Castle was situated halfway between Polwarth village and Polwarth Parish Church. The Polwarth Thorn was a thorn tree which was used in village festivities. Several verses and melodies have arisen, e.g.: