Got a lady wanding me to kill everthing in the yard and aerate and over seed along with starter fert. Lots of clover, crab/wire grass and wild oninons. Will roundup kill clover, onions, and dormit/dead crab grass this time of year? Its supposed to be 65deg tommorow however its only about 45today. I know it works better when it hotter in the midday. Should I wait a few weeks or can I begin spraying now? Im wanting to spay pretty soon followed by annother application 7-10days latter then hope to have seen on the ground end of march.