It may be okay to mow your lawn in december if you live in a climate warm enough for it to continue growing. Trim your grass to approximately two to two-and-a-half inches to avoid irreversible damage. But it depends entirely on where you live. · stop mowing once temperatures are consistently cool and your grass stops growing to protect it from frost. However, leaving your grass too short in cold weather could cause stress leading to damage to roots or leaves. This will likely be around late october or early november when the temperatures drop below 50°f. Raise mower height for warm-season grass in fall and mow if needed for weed control. · stop mowing your lawn in the fall when temperatures consistently drop below 50°f for warm-season grasses or 40°f for cool-season grasses. Properly finishing your last mow helps maintain grass health and protects against winter diseases like snow mold. · key takeaways continue mowing while grass is growing, cutting only one-third of its height each time. For cool-season grass, mow until growth stops, ending at 3–4 inches tall. · heres everything you need to know about when to stop mowing the lawn , signs when the last cut is approaching, and how mowing in cold temperatures can harm your lawn. · although there is no perfect timeline, its suggested by experts to continue to mow your grass until you notice it not growing as rapidly. If you live in a cold climate and your grass is dormant, avoid cutting your grass until the weather begins to warm up again to avoid causing damage. You should stop mowing your. The best time of year to stop mowing depends on the temperature in your area and the type of grass you have, but in most cases, october to november is the sweet spot. See full list on homesandgardens. com However, there are a few ways to test if its. Along with understanding when to stop watering a lawn in fall , knowing when to stop mowing your lawn in the fall can have a direct impact on your grass growth the following year. The exact time to stop mowing will depend on your us hardiness zoneand local climate, as well as the type of grass you have. Regular mowing also prevents grass from becoming too long and matted, wh. You should aim to cut your lawn on the shorter side in the winter as leaving your grass too long could leave your grass susceptible to disease. Typically, these temperatures occur from late october to early november in northern regions and early to mid-december in southern regions.