I have twelve potted hydrangeas, but this year, i was not able to enjoy their blooms, i know i'm doing something that is not right.

recently, i have noticed this brown spots on their leaves

and finally, when they bloom, it was almost a size of a 10 peso coin...

i decided to transplant them, and this is what i saw... they are root-bound... poor hydrangeas, there isn't enough room for them to grow

I LET THEM BREATHE, HOPING FOR THEM TO GIVE ME NICE BLOOMS