Hydrangea pan. "Phantom"A remarkable panicle hydrangea with the largest flower heads of any of its species up to 15 inches long. The conical color changing blooms unfold midsummer as a creamy white, then graduate to a blushing, soft pink as the summer progresses. A heavy bloomer with sturdy stemmed flowers that do not flop. Deciduous. LIGHT: Partial sun WATER: Water when top 2 inches of soil is dry. SIZE: Quickly reaches 6 to 8 ft. tall and wide.