Small Red Robin wrote:

Janet - moss would be an option and would probably do very well there.
I'm not sure though that it might be dangerous to walk over all the
time? Wouldn't it be very slippy? Our garden is very long and narrow
and that little section is right in the middle - on the way to our
decked area, my washing line and my greenhouse and shed.... so well
travelled.

I think the slipperiness would be more of a problem if it was growing
on a hard surface.