"Judith Lea" wrote in message
...
In article , Barry & Iris
McCanna writes
Our soil is acid and this is what makes them so blue.
We have all shades of blue going to almost a navy.

Hello Iris, my soil is not acidic so what can I do to make them turn
a
brilliant blue? I do feed with Miracid but it doesn't make them
turn
colour.
--
Judith Lea

Hello Judith,

There is a product in England, but I can't remember its name. All
garden centres should have it. My Mum used to say that if you put
old nails or iron filings, etc. around the root system that would do
it! Haven't tried so don't know if it works.

We have the opposite problem in that we can't keep a pink hydrangea!
Any pink slowly turns blue. A friend bought me a beautiful lavender
one too and that turned blue. But I love them and they are in all
different shades. One in particular, a very rich dark blue. White
stays white and "Annabel", the huge-headed white/green stays perfect
into late autumn.

Regards
Iris