This seedling of H. montana was registered by Roger and Ann Bowden of Devon, England in 2005. It forms a giant size mound of green foliage up to 30 inches in height with a spread of 83 inches. Pale purple flowers in clusters bloom from late June into July. This cultivar is part of the "Devon Series" of hostas.

A Tor is a local name for the peak of a granite outcropping in the landscape.