THE BEST WAY TO PREVENT UNWANTED WEEDS
Make it known: weeds not welcome here
One of the most important rules to remember when deciding how high or low you want to mow your lawn is the one-third rule. Grass plants attempt to balance their above and below ground growth, so the root systems are roughly equal to the mass of grass blades. Removing no more than one-third of the grass blade at any one mowing helps keep this balance.
Mowing too short, a common mistake some homeowners make in an effort to reduce mowing frequency, can stress plants. In addition, if too much grass is removed, clippings will fail to decompose rapidly enough, contributing to a buildup of clippings and an unsightly lawn.
Here are some other recommendations about mowing height:
Mowing height varies depending on growing conditions, grass type, and the season. Your landscape professional will be able to match proper mowing height to your lawn, helping to ensure that it stays healthy even during times of stress.