For those looking to alter their hydrangea’s bloom color, here’s the recommended Hydrangea color chart based on soil pH:

• Pink Blooms: Achieved by maintaining alkaline soil (pH 7.0 and above), enhancing the availability of potassium and phosphorus.
• Blue Blooms: Best obtained in acidic soils (pH 5.5 and lower) where aluminum ions are more soluble, contributing to the blue pigmentation.
• Purple Blooms: Generally occur in neutral pH soils (pH 6.0-7.0), creating a blend of pink and blue pigments.