The Pink Diamond Hydrangea Shrub is very hardy and grows to 6 feet with magnificent, large panicles up to 12 inches long and 8 inches wide. The flower heads of the Pink Diamond Hydrangea are great for indoor arrangements and even make good potted shrubs, and this Hydrangea is a very hardy deciduous shrub that grows up to 6 ft. tall and has magnificent, large pinnacles up to 12 in. long and 8 in. wide. Pink Diamond Hydrangea Buds open white and turn a bright, showy pink as they age, and the plant is native to Japan and the blossoms are very long lasting.