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Soil Acidity. Soil pH determines whether aluminum is accessible to the plant, and this largely influences the resulting color. When the soil is acidic (i.e., the pH is below 6), aluminum becomes ...
Hydrangeas Are Nature’s Mood Ring—Here’s How to Get the Colors You Want. Susannah Bradley. April 14, 2025 at 11:12 AM. Copied; ... Plant Health: A stressed plant may ...
Hydrangea colors can change with soil composition. Here's what to know about changing your soil pH to get the hydrangea flower colors you want in your garden.
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