Did a search, but kind of have a more specific question. I realize it is unwise to seed or sod when the ground is froze, but at what point in the spring (the earliest time) can I apply seed based on freezing temps?. Will temps below 28-32F hurt seed? Average last freeze here is about March 17th. There is a push in this region for seeding as early as feasible because the hot summers take their toll.