6 Things That Will Change Hydrangea Color Like Magic
Soil pH: The pH level of the soil can significantly impact the color of hydrangea blooms. Acidic soil (pH below 7) tends to produce blue flowers, while alkaline soil (pH above 7) results in pink flowers. Adjusting the pH level can alter the color of the blooms.
Aluminum Sulfate: Adding aluminum sulfate to the soil can increase its acidity, which in turn enhances the blue coloration of hydrangea flowers. This compound is often used to intensify blue hues.
Lime: Conversely, adding lime to the soil raises its pH, making it more alkaline. This can encourage pink or even red tones in hydrangea blooms, particularly in varieties that naturally tend towards pink.
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Coffee Grounds: Hydrangeas respond well to the acidity found in coffee grounds. Incorporating coffee grounds into the soil around the plant can help maintain or enhance blue hues.
Epsom Salt: Epsom salt, which is magnesium sulfate, can influence the color of hydrangea blooms. It is believed that adding Epsom salt to the soil can intensify flower color, especially in blue hydrangeas.
Fertilizer: Using a fertilizer specifically formulated for acid-loving plants can help maintain or enhance blue hydrangea blooms by ensuring the soil remains acidic.
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