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:
Sometimes I will put some fertilizer on some of the annuals that are in the ground, but otherwise, plants in the ground get very little fertilizer. But I do have a lot of Hydrangeas in pots and I do need to fertilize them. I'm learning about all this myself, but when I make my potting soil I usually will put in a mixture that contains some leaf mold and will add some Greensand. I don't know how much of this is necessary, but it seems to work.