Soil temps are now 62 in Nashville. Bermuda is greening in March. Crabgrass will germinate with next rain, bet the house on it. Time to switch to Dimension. Dimension will cover your pre and post emergent crabgrass needs, though it will cost much more than Prodiamine. My luck, it will snow next week and ill be wrong again!!
Oxalis is here also. Nutsedge will be next. What a bummer!!