In message , MM
writes
I think I may have been a little lax in the watering, but just now,
when I was giving the 'lawn' another water, I did notice for the first
time several shoots undoubtedly of grass, yippee! Very patchy, and just
a very few shoots, but summat's happening at last. I think I'm going to
need to water every several hours, as the full sun dries out the
surface in no time.

Don't do that - you want the roots to grow strongly downward, and they
won't if the water is only near the surface. A good soak every 2-3 days
should do it...

--
Klara, Gatwick basin