According to a BBC programme I watched yesterday, it's the reduction in
green (chlorophyll) that exposes the other colours that are already there.
(Because it's reached the end of the growing season, it no longer needs
chlorophyll and stops synthesising it.)
BTW, the programme has STUNNING photography if you ever get the chance to
see it. It's called "The Great British Year"
http://www.bbc.co.uk/programmes/p01db10t
Jez
On 28 October 2013 14:10, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>wrote:
> Red in the leaves is an indication of sugar content.
>
> Chuck Norcutt
>
>
> On 10/27/2013 10:27 PM, DZDub wrote:
> > As Paul has indicated, it has been a weird fall for color at this
> latitude,
> > but weird has been good. I get out as much as I can and seem to find
> > things that interest me. The leaves have hung on longer and greener than
> > usual, some leaves fell all at once last week, some trees that usually
> drop
> > their leaves early (most often the red ones) are still coming on and
> we're
> > nearly at November.
> >
> > Some of the oaks are a brilliant red this year. An example:
> >
> > http://myweb.uiowa.edu/jfwilcox/
> >
> > Joel W.
> >
> --
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