Hydrangea macrophylla Endless Summer® BloomStruck® BLOOMSTRUCK HYDRANGEA Bloomstruck is the newest addition to the Endless Summer Series of Hydrangea. Blooming on old and new wood, this beauty doesn't quit! Flowering from May until Frost, on red stems, the plant will reach 4' to 5' in height and about the same width. Flower color is determined by your soil, flowers range from soft pink to bright purple! Perfect in sun, part shade or filtered light. Attractive to butterflies!