I live in Ohio and I dormant overseeded in early January. So far, it has worked wonderfully. A lot of the new seed is coming up but some weeds have started to germinate as well. I normally put down some pre-emergent, like Halts, but I waited to let as much of the seed to germinate as possible. The snows and wet springs made this method of overseeding work fantastic in my opinion.
Does anyone know when is the earliest I could put the pre-emergent down? I would love to be able to use this dormant overseeding method every year, yet still prevent crabgrass and other weeds from popping up in late spring and all through summer.