"Gavin Staples" wrote in message
...

"Weather Consultancy Services" wrote in message
...
I'd noticed leaves changing cooler, to yellows and even some reds. I
wonder
if this is due to the high temperatures and low moisture levels in the
soil?

Simon

--

The leaves change colours according to length of daylight mainly and also
due to poor weather - it hasn't rained a drop since 1 Aug and we have had
record-breaking temps, so I wouldn't be surprised.

Joe, Bedford.

Seasonally leaves are shed in response to reduced daylight hours and
reduction in temperatures. The current shedding of leaves is due to
"physiological shock" due to heat and low moisture levels in the soil
reducing transpiration rates and effectively drying the leaves out causing
the leaf stalks to become withered and brittle and breaking off.

Dave