Every yard is different, however, we recommend mowing weekly throughout the growing season and we cut fescue at the recommended height of 4 inches. You only want to cut 1/3 of the grass blade per mowing to not shock the turf. Additionally, cutting at 4” allows the roots to grow deeper and ensure the health of the turf. As a general rule, the length of grass that you can see is also the length of the root and the longer the roots, the healthier your turf. In cases of extremely hot and dry weather during the summer, we evaluate each yard on a case by case basis and if it is showing signs of stress and low growth, we would skip it until the following week. In the event you have a warm-season grass such as zoysia or Bermuda, those are cut at a lower height as the fescue rules don’t apply to them. However, those types of yards are fewer and farther between in our climate.