When hydrangea flowers begin with a color and fade to white, it’s usually an older bloom and past its prime for pollination. However, you’re saying the flower was white from the very beginning? Our guess is that your plant was hybridized using a white blooming hydrangea with a pink/blue blooming hydrangea, and some of the plant is showing its original white. In this case, yes, it will stay white. White flowers can not be changed.
When hydrangea flowers begin with a color and fade to white, it’s usually an older bloom and past its prime for pollination. However, you’re saying the flower was white from the very beginning? Our guess is that your plant was hybridized using a white blooming hydrangea with a pink/blue blooming hydrangea, and some of the plant is showing its original white. In this case, yes, it will stay white. White flowers can not be changed.