This cultivar is a seedling of an H. 'Ginko Craig' F1 seedling and it was registered in 2005 by Steve Chamberlain of New York. The large size grows to about 19 inches in height with medium green foliage that has purple petioles. Lavender flowers bloom from late July into August.

Rivendell is an Elven outpost in Middle-earth, a fictional realm created by J. R. R. Tolkien. It is an important location in Tolkien's legendarium, and is featured in The Hobbit, The Lord of the Rings, The Silmarillion, and Unfinished Tales.