There is a wealth of info on the internet on how to change the colors of the Hydrangea. I just wanted to see what color they would bloom without any additives. I read that it is impossible to change a white Hydrangea to any other color.
Fertilizers with high levels of phosphorus helps to prevent aluminum from creeping into the Hydrangea system leaving it pink. Aluminum must be present in the soil to obtain a blue color.
Fertilizers low in phosphorus and high in potassium will help it turn blue. It's almost impossible to control the intensity of the color.
Water can also contaminate the soil you have balanced. You could have your water tested.
Hydrangeas near concrete foundations or sidewalks will be difficult to turn blue because of the lime leaching out of these structures.
As I read on the internet and have been told by Ms. Doris, and she knows, it's easiest to control the colors of the Hydrangea if you grow them in containers. Planted in the ground you will have to continue to add to the soil to keep the color you have changed it to
What is the most common color Hydrangea you see..blue or pink?
Today I am Thankful for having so much information at my finger tips!