Is it true that I can mow less often if I cut the grass really short?
The frequency of mowing should be based on the growth of the grass. As a general rule, mow as often as needed so that no more than one-third of the total leaf area is removed in a single mowing. Removing more than one-third is detrimental because it reduces the reserve carbohydrates within the plants that are used to regrow shoots and leaf tissue after mowing. Depleting the carbohydrates reduces the capability of the grass plant to withstand environmental stresses. Making the lawn more prone to drought damage, disease issues, and weed pressures.