How To Care For Purple Romance Hydrangea. How to Care for Hydrangeas. One of the new breed of mophead hydrangeas this one was chosen by us for the intensity of the flower colour.
He explains that if the soil is high in phosphorous the aluminum that you need for the purple or blue color wont be available to your bushes so they will most likely be pink. Another explanation that your hydrangea leaves may be turning purple is just a direct result of a phosphorus lack. Hydrangeas thrive in lightly shaded locations but they still need four to six hours of daily sun to flower well.
With these needs met your hydrangeas stay on track for beautiful blooms.
Another explanation that your hydrangea leaves may be turning purple is just a direct result of a phosphorus lack. Dig a hole as deep as the root ball and 2-3 times as wide. Sprinkling either around a white hydrangea wont change its color. To get the best colour you should apply hydrangea colourant at regular intervals but even when grown in normal or alkaline soils the flower colour will revert to.