A Univ. of Nev. School of Medicine, Family Medicine answered. No, there are times where you can have small releases of bacteria into your bloodstream that last only a few minutes, for example, after you have your teeth cleaned.
To change the color of your hydrangeas, add the following to the soil: CHANGE TO PINK. For hydrangea blooms to be pink, the plants must not take up aluminum from the soil. If the soil naturally contains aluminum, one must try to keep it away from the hydrangea's system. Following are a few tricks that might work:
Hydrangeas for Sun. While most hydrangeas do best in shade, varieties of Hydrangea paniculata prefer sunny spots. Most selections have large clusters of white flowers in summer. The showy blooms fade to shades of pink or red before drying to beige. In many areas, they dry right on the plant in fall and stay looking good through most of the winter.