Each of the fascinating flower clusters of this lacecap hydrangea is made up of a dense rich dark blue centre surrounded by a ring of pale blue florets which seem to dance around the edge the flowers of hydrangea serrata 39bluebird39 tone well with the dark green45bronze leaves which turn to shades of red and purple in the autumn this compact hydrangea can be grown in a container or in the border and it makes an excellent cut flower too height 100cm 40393441 spread 10