Mowing height should be at a minimum of 3 inches (length of the grass blade). Ideally, you want to be at 3.5 – 4 inches. Taller the grass blades, deeper the roots. This will lead to a healthier lawn and it will increase durability. It is a good idea to leave grass tall during hot and dry periods, as it will help prevent the lawn from burning up. Be careful not to mow too short, especially on the edges. Grass mowed too short can be burned up easily by the sun and most edges are surrounded by paving, which gives off even more heat. Never mow more than 1/3 of the grass blade at one time. Also, please keep n mind, settings on the lawn mower may be different than the height it will cut the grass. Sometimes a lawn mower could cut 1″ shorter than the setting. Using a ruler, measure grass blades after the lawn is mowed, starting at the soil surface.