The height at which we cut your grass is determined by its health, the season, and the one-third rule. The general rule of grass cutting is never to cut more than one-third of its height. This rule prevents the lawn from being too short and over-exposed to sunlight. The weather is not as hot during the spring and fall seasons, allowing your grass to be cut shorter. In the summer, we will cut your grass at a greater length so that it can retain moisture effectively.