The tiny center flowers of this lacecap are deep blue with large petals of light blue that have aged from white. The flowers around the outside edge create an enchanting bloom. The lacecaps nestle amongst tapered leaves which become very colorful in the fall adding to the appeal of this plant. Credit is given to Joseph Dalton Hooker for the discovery of this very ancient Japanese variety in the 1800s. Coerulea is of the same hybrid parentage as H. Serrata, and is noted as being hardier. This is a gorgeous plant with continuous blooming from May till the first hard frost.