Our lawn is pretty rubbish now, especially after the soaking summer up
here (near Hadrian's Wall). The soil is clay. The lawn is old (35+
years), but gets pretty well cared for.

The moss is grabbing an early hold this year. I could rake it out, but
there are a good 4 months before the grass can fight it off again....
should I bother treating and raking moss at this time of year?

I'd like to give the lawn some treatment this Autumn, **if it would do
any good**. I'm *very* well aware that the Garden Centres market
"Autumn Dressing" at this time, but I'm always suspicious that these
things are more in the interest of profits than gardens. (Am I
over-sceptical?)

It's not just the moss I want to get rid of: I'd like to raise the
general health of this, one of my favourite parts of our garden. Do I
wait until next Spring?

Cheers
John