Name: Anne Summerville, SC (Zone 8a) Only dead fish go with the flow!
I've tried tinkering with soil pH with other hydrangeas using aluminium and ammonium sulfate, pine needles and coffee grounds and never have been able to achieve or get even close to the color intensity that the original flower had. The best I could manage was mottling light blue/pink. When this cuttings gets a bit older and more robust maybe I'll try again.
The picture is the results I got with aluminum sulfate.
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