she suggests using your kitchen scraps to help "cultivate vibrant hydrangea flowers", and some of them can even turn your hydrangeas blue. Lindsey said: "Lots of common food leftovers provide a ...

Though hydrangea flowers can range in color from pink to purple and blue, they can also fade to lighter colors. When grown in the acid soil (pH 4.5 to 5.5) of Hawaii’s upper elevations ...