We are completely greened up here now. Lawns look amazing from the mild winter and great nutrient fixation last year. According to the growth charts I am at the end of my optimal preemerge date already. I'm starting the same day as last year. The target temps for germination doesn't mean it all starts to germinate but a few might get going before I get it down. Glad I got a good buy on dimension this year.Better hurry? You guys are getting WAY too nervous. Crabgrass isn't going to pop now, esp with temps heading back down into the lower 60's for a while. Our lawns here are still semi dormant - when I see more response from them I will start fert/pre. If you are really worried about missing some crab (very unlikely), then use Dimension.