Q. What is the correct height to mow a lawn?

A. Mowing lawns too short is one of the most common mistakes homeowners and lawn services make with turf. It is a good practice to mow your lawn high at 2-1/2 to 3 inches. In spring when the turf is thick and lush, you may need to mow more than once a week since you should not remove more than one-third of the grass growth with each mowing. When you cut the grass too short you reveal the brown leaf base of the grass as well as overexpose the grass blades to sun. The longer grass actually casts tiny shadows that help protect and shade other grass blades. The final mowing of the season can be shorter.