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.
Water the hydrangea to a depth of 4 inches after cutting it back. Feed it with a 5-10-5 ratio fertilizer once the soil warms to 68 degrees Fahrenheit in spring. Avoid early feeding since the shrub will produce weak, spindly growth.