Incrediball Hydrangea is an improvement over the Annabelle Hydrangea (also on this website). It has the same colour of white flower but they are bigger in size and have stronger stems to support them. For shade Annabelle seems to bloom better but Incrediball is the one for the Sun. Great addition to any garden.
Cold Hardiness - good down to -34C. Sizing - Grows to about 3' tall and wide, prune in late winter/early spring. Location - Full sun (with summer watering) to 75% shade (less blooms in shade but one of the few flowering shrubs that will flower in that area), avoid really dry garden areas, use anywhere really.