In 1988, Robert
of Savory's Gardens in Minnesota registered this cross of H. 'Rough Waters' × a seedling which forms a
dense, medium size (17 inches high by 3 feet wide) clump. The
leaves are slightly
cupped and moderately corrugated. Lilac
colored flowers bloom starting in mid-June.
The Hostapedia by Mark Zilis (2009), "...leaves of 'Roundabout'
are nearly circular and are also cupped."
Similar cultivars include H. 'Pearl Lake'.