Hydrangea Plants

hydrangea color changing

Zone It is temperate climate, with very rainy summers and dry winters. We never get snow. | Anonymous added on July 4, 2016 | Answered

If I use aluminum sulfate to change hydrangeas to blue, what is the recommended dosage? How often should be applied, and for how long should I apply the aluminum sulfate solution?

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Answered on July 5, 2016
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