My mother just went back to weed-and-feed after years of unsuccessfully trying to do it the eco way.
That being said, there were a couple red-flags in her final declaration.
1) The subsoil was all trashy suburban rubble. That is something that nature is going to be aggressively trying to mend.
2) The guy she had doing the eco-stuff had no real plan to rehab that ground. He was basically spraying organic chems on the lawn, without success.
I have these suggestions:
-Read paul's article about lawn care. Your grass needs worms and organic material to do well.
-Try to use a mix of plants that will grow well as "lawn". There are tons of weeds that do great under even very stressful conditions, have deeper
roots, can be mowed, and give you that "green" look that you expect from a lawn.
-Think about turning your enemies into your friends. When life gives you dandelions, make dandelion wine! Or put the seed into a little packet and
sell it for $1.50 a pop. I'm not joking.
Best of luck,
William