Best Time to Mow Your Lawn

Mowing lawns for some may be drudgery, but it is a labor of love for those that wish to maintain a healthy and well manicured lawn. Regular mowing insures healthy turf and mowing at the appropriate intervals will not only insure a beautiful lawn, but will provide sustenance for the root systems.

Most grasses should be maintained at a height of about 2 inches during the spring and fall and at 2½ -3 ½ inches during the hot summer months. The reason for the higher height during the summer insures that shade is provided for the underlying growth and higher growth enhances the retention of moisture in the soil, thereby reducing requirements for watering. Higher blades of grass also serve as a natural barrier to weed growth. The higher the grass is allowed to grow in the summer (without reaching excessive heights) the better it is.

The most critical rule for determining the best time to mow is to insure that no more than 1/3 of the grass blades are cut at any one time. Cutting more than this length will damage the grass. First, it will deposit more thatch in the form of cuttings on your lawn than is healthy and second, the root system and small shoots of growth will be quickly exposed to the harsh summer sun which causes stress on the plants.

The 1/3 rule means that grass will likely require more frequent mowing in the spring and fall when the grass has just been fertilized and is growing rapidly and less often during the hot summer months when growth is slower.

The best time of the day to mow is late in the day or during the evening. The fact is that mowing damages the plant and it will take a day or two for the grass to fully recover. Mowing in the evening provides about 12 hours of respite for the grass from the sun. Mowing in the morning means that the stressed grass will be subjected to the sun much quicker and if there is morning due on the lawn the grass will be cheated from the rejuvenating effects of the moisture because mowing will hasten evaporation.

In short, the best time to mow the grass is when it needs it – keeping in mind the 1/3 rule and one should mow in the evenings to reduce stress on the grass.