Many Hydrangeas bloom in beautiful shades from pink to blue. It is often the soil pH that determines if a hydrangea blooms blue or pink, and bloom color may change if the pH changes.
Hydrangeas, which were blue when purchased, will begin to have pink blooms in subsequent months given our alkaline soil and water.
Enjoy the vibrant blue color of hydrangeas by adding soil acidifiers to the planting bed. Use Hydra Blue to help move the pH into the acid range. Pink or purple hydrangeas can be persuaded to bloom in the blue hues with some help from Hydra Blue. If you want hydrangeas to bloom pink, don’t do anything, they will naturally drift in that direction.
TO TURN HYDRANGEAS BLUE – Apply from 1 tablespoon to 1/4 cup per plant depending on the age and size of the plant. The first application should be made in fall as the plant begins to go into its dormant period. Make additional monthly treatments now through February and beyond for a deeper shade of blue.
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