How Much Aluminum Sulfate To Turn Hydrangeas Blue

How to Keep Blue Hydrangeas Blue

To adjust the color of hydrangeas, you're mostly working with the soil pH—because hydrangea color is pH-dependent. Here's how to change them: --- 🌸 To Make Hydrangeas Blue Lower the soil pH (more acidic, below 6.0) Add aluminum to the soil, which is needed for blue color 🧪 How to do it: Mix in aluminum sulfate (follow package directions) Mulch with pine needles, coffee grounds, or peat moss Avoid lime or high-phosphorus fertilizers (they block aluminum) --- 🌸 To Make Hydrangeas Pink Raise the

How To Grow And Care For Hydrangeas