Hydrangea macrophylla ENDLESS SUMMER 'Bailmer' THE ORIGINAL 
Everblooming Bigleaf Hydrangea
Shrub. Large, mophead flowers bloom Summer in either pale pink or blue, depending on soil pH. Bright green, mounding foliage turns red in Fall, 3-5ft tall and wide. Part shade. Great in containers or as a cut flower. Zone 4