Mowing helps keep weed populations down by keeping the turf thick so there are no thin patches for weeds to invade.
While trying to save time, don't be tempted to scrimp on mower coverage. When you mow, it's important to overlap each pass by at least three inches. That will ensure an even mowing with no skipped strips. One of the best ways to save time is to use a wide cutting bed.
Keeping the grass at a height of 3" is strongly recommended for spring and fall, and 3 1/2” in the summer months of July and August.
When it comes to mowing, never remove more than one-third of the surface area of the grass blade at any one time.