We do organic spraying. Just want to get anybody elses ideas on this. He built his house by an old gravel pit, and when he seeded his lawn he put down like a 1/4 inch of topsoil. He does have grass, but it is spotty weeding and nasty. He wants me to spray fertilizer to make the grass grow in thicker. But his major problem is that the darn grass roots just are not going to grow into gravel. I think my suggestion to him, is going to be to do 4 or 5 topdressings of compost. I figure as the grass grows, that organic matter should settle down in, and he should be a little better off. But I am curious if anybody has any other ideas. What really needs to be done, is we should just torch his lawn and bring in 60 yards off topsoil and start from scratch, but he will not do it, so. Any suggestions.