Vinegar to turn Hydrangeas blue?
OK. I'm curious to hear what others say about using vinegar to turn hydrangeas blue. Anyone ever done this?
What did my grandmother use when I was a child. I know for sure none of the products we have now where available. Someone told me she probably used vinegar? Could that do the trick? Another recommendation was to put nails in the soil where they are planted so they would rust off and that would also work?
Just curious what everyone else thinks.