This medium size (17 inches high by 43 inches wide) cultivar is a seedling of an H. 'Ginko Craig' F1 seedling and it was registered in 2005 by Steve Chamberlain of New York. The clump has medium green foliage that is elliptic in shape, slightly wavy and moderately flat. It bears pale purple flowers in August on scapes 15 to 23 inches tall. Viability of the seeds was not known at the time of registration.

The registration materials state: "...dull-leafed, low wide mound, rich display of purple flowers."

Weathertop (Sindarin Amon Sûl, "Hill of Wind") is a hill in the Eriador region of Middle-earth in a J.R.R. Tolkien book.