Q.
Changing color of hydrangeas
Can I use dissolved aluminum sulfate in water and pour it right on the blooms before they fully blossom? I've heard people do it and it really changes the color to a deeper blue than just putting it around the drip line.
A.
Downtoearthdigs
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on June 12, 2017
This article will help you with your Hydrangeas.
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/change-hydrangea-color.htm
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