Another newb question, weed control new sod
Okay so I have some weeds coming up pretty quick both through my new sod (three weeks at this point) espicially in the cracks of the sod, it is only really bad near my back neighbor. So my questions are as follows:
When can I start killing these weeds, I tried pulling but some I cannot get by the root? What kind of weed killer can I use? I will be mowing sometime this week for the first time.