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:
Unless your soil is defficient in minerals like phosphate, I would not apply more. Hydrangeas are not heavy eaters of fertilizers and amendments like other plants are. An amount as specified in the product label would be safe assuming your soil needs phosphate. Too much of it can eventually decrease mycorrhizal activity. Phosphorus helps roots and blooms develop.