This non-registered cultivar is a
sport of H. 'Piedmont Gold' from
Rod Lysne of
Northern Grown Perennials in Wisconsin. It forms a large size mound with near white flowers in late June.
The Hostapedia by Mark Zilis (2009), "...named for Gandalf's mystical
horse in J. R. R. Tolkien 's The Lord of the Rings
Similar cultivars include H. 'Sentimental Journey'.