In article , Ron Clark
writes

I have in the past several times cut the lawn in Jan-Feb during a
heavy deep ground frost. Doesn't seem to hurt it

How come?
I know the grass under the washing line always suffers when we walk on
it in a frost. Imagine what would happen to your finger if it was frozen
solid and then hit with a hammer!!!!!!!!!!!!!!!!!!!!!!!

--
Jane Ransom in Lancaster.
I won't respond to private emails that are on topic for urg
but if you need to email me for any other reason, put ransoms
at jandg dot demon dot co dot uk where you see