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The Simple Trick To Use To Change The Color Of Your Hydrangeas
By TRICIA GOSS
The color variation in hydrangeas is mainly influenced by the pH level and availability of aluminum in the soil, which you can adjust to change the color of the plant.
Typically, soil with acidic pH of 5 to 5.5 yields blue flowers, alkaline pH of 6.5 to 7 yields pink or red flowers, and a neutral pH of 6.0 to 6.5 yields purple or lavender shades.
First, conduct a soil test to get information about its current pH level and nutrient composition, allowing you to make more accurate decisions regarding color adjustments.
You can pick up soil testing kits at garden centers or agricultural extension offices, or you can hire professional soil testing services for more detailed recommendations.
Acidify the soil for blue hydrangeas by applying aluminum sulfate, sulfur, or sulfuric acid during early spring or fall, as these amendments lower the pH level of the earth.
Alkalize the soil for pink hydrangeas by raising its pH level with lime, wood ash, or baking soda, and balance acidic and alkaline soil conditions for purple or lavender shades.
Changing hydrangea colors is most successful when moving from light pink to blue or vice versa, instead of trying dramatic color changes, such as from a bright pink to a deep blue.