By the way

So far, the plastic I put down two weeks ago does seem to be working. The grass beneath it is definitely yellowing and dying back. And the hottest time of the year is on its way! (Go, greenhouse effect!) Also, I've been using horticultural vinegar with orange oil on weeds. It isn't a permanent kill, but it does get the top growth really well and if you are persistant (obstinate, stubborn) you can get it all eventually. I'm not a perfect organic gardener, but research is showing a link between Round-Up and the kind of cancer that killed my Dad, uncle and grandmother (in addition to pesticides). We just don't know enough about glyposate (the active ingredient) and I don't want to make things any worse in the world if I can help it. So, get you some vinegar and put down the Round-Up for a while.