Well, I was in a hurry. And it was in the middle of winter. The darkness killed the grass and other weeds quite effectively. Not too much seed material made it to spring, either. Not sure why.
Seems to me if the soil gets too hot, it kills any beneficial flora that help plants flourish. Do you re-introduce mycorrhizae when you plant?
So why do you use clear plastic instead of something that doesn't admit light?
