This hybrid of H. 'Butter Rim' × an unnamed seedling was registered by Robert Savory of Savory's Gardens in Minnesota in 1988. It forms a mound about 12 inches high with a spread of 24 inches of gold colored foliage with a green marginal variegation. The leaves are moderately wavy and have thin substance. Pale purple flowers are borne in August.

According to The Hostapedia by Mark Zilis (2009), "...develop spots that can occupy anywhere from a small portion to a majority of the leaf surface...the spots mar the beauty of 'Moon Shadow', making its widespread usage debatable."