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:
Mix 1/4 cup of aluminum sulfate into 1 gallon of water in a watering can to create a soil drench for an already established plant, like a hydrangea, that needs a decreased pH. Pour the mixture around the root zone of the plant once a week, beginning in early spring until bloom and again in the fall.