On 9/10/2013 9:13 PM, David Hare-Scott wrote:
j wrote:
My blue hydrangeas have been turning green as the season goes on.

How do you fix that?

I finally have a good spot (shady) and good year for them (plentiful
rainfall) and now green flowers.

Jeff

I think a greenish hue is on basically white flowers but I don't grow
them and there are many species of hydrangea so I could be wrong. In
general the flowers of the more common variety are more blue in acid
soil. Perhaps you limed the soil this year? Try testing your soil pH.
It easier to make soil less acid (by adding lime) than to make it more
acid. Maybe you could add more lime and make them pink/purple.

David

My soil is acid and all I get is blue. Color is supposed to be pH
dependent.