Those little weeds popping up from the late Summer heat will be the big weeds causing you problems next Spring. Now is the time to take care of them. We show you the right way to control weeds. If you have seeded your lawn, avoid this tip altogether. You do not want to spray weeds while new lawn seed is down or germinating. You can control those weeds after the new grass is strong enough to withstand chemical applications. We'll help you deal with those issues at a later date.