A sport of H. 'Blue Skies', this is a non-registered cultivar from Roy Klehm of Klehm Nursery in Illinois. The leaves have a green center with a narrow white marginal variegation. It forms a medium size mound that bears pale lavender flowers from mid-August into September.

According to The Hostapedia by Mark Zilis (2009), "The plant described here was originally known as 'Emerald Blue Skies', then 'Emerald Skies'. Somehow 'Emerald Skies' became a green-leaved plant and the form with a very narrow white margin, almost by default, became 'Exotic Blue Skies'."