The rule to use for determining how often to mow is the 1/3 rule which states: Never remove more than 1/3 of the leaf blade height at any one mowing. So, if your mower is set at 3 inches, you should mow when your grass reaches 4.5 inches. Violating this rule not only scalps the grass and makes it look unsightly, but also puts the grass under stress. If you just can’t seem to keep up with the growth of the grass, try raising the height a notch and slowly lowering the mowing height over time to get back at the desired height.
August 16, 2012