During winter, grass may grow slowly or go dormant completely due to cold temperatures. However, this doesn’t mean that you should stop implementing the lawn care tips. Although the winter season is not the right time to mow, at times, you may notice that the grass is still growing. During this time, you may need to mow grass at least once every three to four weeks. Also, ensure that you keep the grass at the right height. For instance, if you own warm-season grass, you can mow it at a length of 1.5-2 inches long. But a cold-season grass should be kept at the height of 2.5-3 inches tall.