I have healthy The Original Endless Summer® hydrangeas, but the blooms are now green. Is there a way to get the color back?

Timing is the reason for these green blooms. Initially the blooms on The Original Hydrangea do appear green before they take on their blue (or pink) tones. Once blooms age, they can also appear a different color. When that happens, you can deadhead those blooms to get a new flush of blooms. Make sure to review how to deadhead Endless Summer^® hydrangeas before doing any cutting.