A week before sowing grass seed I put out a starter fertilizer. After a week I cut the grass and aerated it. Then I put out the grass seed and waited for the rain. I did get rain for the next two days. I want a healthy lawn so bad. I have huge patches of clover and more patches of weeds. I read that the best way to get rid of weeds is to have thick grass to choke it out. Fingers crossed.