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.
The addition of lime to the soil around the hydrangea wonât change the flowerâs color overnight. Depending on the soilâs texture, it may take months or even up to three years, according to Reeves. Monitor the soilâs pH twice a year.
Image by Dwight Sipler. For gardeners growing an acid loving plant like blue hydrangea or azalea, learning how to make soil acidic is important to its overall health. If you donât already live in an area where the soil is acidic, making soil acidic will involve adding products that lower the soil pH.