My plot was the 'compound' during site development (the one place
where the builders draw off water and electricity). Over the
inevitable builder's rubble the developer laid a load of topsoil,
which has become compacted. There aren't many worms in it! How might I
improve aeration of the soil? I bought a soil aerator yesterday and it
works well, as the ground is very soft after all the rain. But is it
really going to do any good? I read somewhere that forking in some
organic matter could be useful. Would one of the bark-based compost
products be the right thing to use?

MM