Q. Our neighbor had a lawn care company apply a half inch of compost to their lawn. It looks like such a miniscule amount, how could the lawn benefit?
A. Yes, it is a small amount of organic material, but it does have a positive impact on the lawn. It has even more impact if the lawn is aerated before the compost was applied. That way the organic material penetrates the lawn into the root system. Decomposing compost provides nutrients and the organic material contributes to gas exchange, and water holding and drainage advantages. Letting the leaves decompose on the lawn after they have been mowed is almost as effective as adding compost.