If after a cold snap, you aren’t sure if your grass is dormant or damaged, there is a way to find out.  ● Just cut small plugs of the grass with roots attached and plant them in a flower pot. ● Place the pot in a warm, sunny spot and wait.  If the grass grows, then the rest of the plot will come back in the spring. If not, you may need to reseed or put new sod in that portion of the lawn.