I picked up a minimum growth temperature of 43 deg F for a British lawn
which ties in with gb's figures.
Regards
David T
"gb" wrote in message
...
I always reckon on 7 to 8 deg C for an average of 3 days, night and
day temperatures, stops the grass from growing. Likewise but in
reverse to start growing and needing a cut.

Which therefore means I will be cutting my grass on Xmas day probably
this year.

I always get asked this, on my rounds. It used to be end of October no
more regular cutting, but its now well into Nov. Similarly I start
cutting regularly mid March as opposed to end of March.