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:
1 Plant smooth-leaf hydrangeas in full sun if the soil stays moist. (Partial shade is better in spots that dry out from time to time.) 2  Water them during times of drought. 3  Amend the soil with organic matter (such as compost).  Prune stems back in early spring, just before new growth emerges.