My summer garden transforms during hydrangea season. I don't do anything to adjust the color of the hydrangeas, so usually end up with pinks and purples in varying hues. They are “endless summer” hydrangeas which do best with morning sun and dappled afternoon shade. Hydrangeas are so lush because they bloom on the previous and current season's growth. The flowers will turn burgundy in late summer, which seems a fitting transition in September.