I recently dug a 10 by 10 foot section of my front lawn to replace the soil with garden-quality dirt. I dug six inches down and now I have a pile of lawn dirt and lawn grass. I would like to turn it into garden-quality dirt for next spring.
However, I am a new gardener, and I'm not sure what to do to improve it's quality in that time. Should I just treat it as a
compost dump? Should I pull a tarp over it to kill the grass? What can I do to improve the quality of my old lawn soil in time for next spring?