This is a seedling of (a seedling of H. rupifraga x H. 'Maruba Iwa') x H. 'Blue Jay'. It was registered by Hans Hansen and Shady Oaks Nursery of Minnesota in 2005 and received a U.S. patent in 2006. It forms a slow growing mound about 14 inches high by 36 inches wide and bears pale lavender flowers from late July into August. The leaves are slightly cupped and corrugated with thick bloom on the underside.

The New Encyclopedia of Hostas by Diana Grenfell (2009) states: "Best in the shade where lower light levels help retain the bluest leaf color, but not under trees where raindrops and falling debris might spoil the appearance of the leaves. Moderately vigorous."

Mikiko Lockwood in an article on The Hosta Library titled, A Little About Japanese Hosta Terms defines the term iwa as rock, Iwa Gibōshi or H. longipes and the term maruba as round leaf or round-leafed.