I just prepared and planted a new lawn area on last Monday. It is going to take about three weeks for the grass seed to germinate but there are tons of green stuff poking up through the mulch. My guess is that they are the seedlings of this weed I took photos of. I would like to put some horrid weed and feed down to kill all of the sprouts. I know it's not a good thing to do, but nobody here has the time or inclination to pull the millions of sprouts out. Any thoughts on what stuff I should use?