MAKE SURE YOU HAVE THE RIGHT HYDRANGEA VARIETY
Not all Hydrangeas can change color, only Hydrangea macrophylla or Bigleaf Hydrangeas can. So this is the first step in knowing whether or not you can chance the color of your Hydrangea blooms.
MEASURE THE PH OF YOUR SOIL
It's easy! Use a soil kit to measure the PH of your soil.
- Less than 7 = Acidity
- 7 = neutral
- Greater than 7 = Alkalinity
KNOW WHAT PH YOUR SOIL NEEDS TO BE FOR THE BLOOM COLOR YOU WANT
- Blue Flowers: pH 5.5 and lower
- Pink Flowers: pH 6.5 and higher
- Purple Flowers: pH between 5.5-6.5
AMP UP THE SOIL ACIDITY FOR BLUE BLOOMS
To amp up your soil acidity for blue blooms, apply organic acidifiers that include sulfur and sulfate, according to label instructions, and monitor through out the growing season.