In early spring and fall, the lawn can be mowed shorter, about 5 cm. Then, raise the mower blades to 8 cm for the entire summer season. Short mowing leaves your lawn vulnerable to drought, disease, insects, weed germination and trampling damage. This is one of the main causes of poor lawn condition. Never cut more than one-third of the grass stem at a time and keep the mower blades sharp to avoid injuries: they are open doors for disease. In hot weather, avoid mowing; the lawn is not growing anyway. For a healthy, long-lasting lawn, raise the blades of your mower and maintain it carefully.