With winter coming, it is time to get your lawn ready for the cold. Zoysia grass is a “warm season” grass and goes dormant in the cold months, turning a tawny-brown color after the first hard frost. This is a good thing! Dormancy helps the grass survive the cold months while still coming back as the temperature warms. It is a very normal process and the grass will be back in no time without any work needed from you.