Blue is the colour......

.....of these gorgeous hydrangeas.  We drive by them often but I've never stopped to take a shot of them.  Just done with my phone so a poor quality shot.  You often see the pink both pale and a more cerise one button often these.  There are so many I don't think they've got a load of 'old iron' beneath them....but who knows?!  I think that's what's meant to turn them blue........  More (of the same) in extras.