I have a hydrangea that I just bought and planted yesterday. Its in a 10 gallon pot and I'm keeping it on my patio. The flowers are kinda mauve in color. I want to make them blue in the future. How much coffee grounds should I add and how often do hydrangeas bloom. I'm in zone 9 by the way.
Thanks
Adding coffee grounds to hydrangea soil?
Add as much coffee grounds (tea bags too) as you like. Won't hurt them. Epsom salts also good for blue.
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