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ChristinaHudson: 11 months ago

What can i add to the soil to get my Hydrangea to bloom blue again?

when i bought my hydrangea's last year they were blue, the label said depending on the acidity of the soil they could go pink, which they did, what can i add to the soil to get them to bloom blue again?

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Answer 1

r0sesarered: 11 months ago

To be able to change the color of your hydrangea from pin to blue, you need to lower the pH of the soil so that it can become more acidic than alkaline. You can do this by adding aluminum sulfate and single-element fertilizers like muriate and potash. Fertilizers containing phosphorus and nitrogen will only reverse the work of the aluminum sulfate and make the flowers pink so avoid them.

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Answer 2

Shilodog: 11 months ago

Fertilizer.

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snafubar: 11 months ago

nope.....fertilizer won't help....need to lower soil ph

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Answer 3

snafubar: 11 months ago

you can add aluminum sulfate to your soil to lower the soil ph.....hydrangeas are like azaleas, camellias, etc. and like a slightly acidic soil.....you can get it at most plant nurseries.....might not be a bad idea to check soil ph to see how much you will need to add

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