A new and distinct cultivar of Hydrangea macrophylla plant named ‘PIIHM-II’, characterized by its remontant (reblooming) trait, flowering on old wood and new growth of the season dark pink mophead inflorescences in non-aluminum based media and violet-purple inflorescences in aluminum based media inflorescences that age to rose-red and remain showy for an extended period of time compact, rounded to spreading growth habit dark green foliage red stems and resistance to powdery mildew.
