In the country, a bumper crop of worms, invites a bumper crop of moles, armadillo's, and possums that turn the lawn into a cratered moon scape almost overnight.It ain't fast, it's a multi-year deal, but using milorganite fertilizer will create a bumper crop of earthworms which will aerate and putting some organic top dressing as has been mentioned each year will eventually work its way into the soil and create a good bed. It takes time but you can grow about anything after a few years of that practice.