Originally Posted by Skipster
But, your bluegrass in WI would benefit much more from regular sand topdressing than it would from microbial applications or compost applications. But, research has shown that it will do more good for the "soil food web" than microbial additions or compost applications.
Does this hold true for Fine Fescue lawns on heavy clay soil? I've always been told compost applications following aeration in Spring or Fall was the way to go.