How Low Can you Go? The short on Lawn Mowing Heights
By: EFynch.com : Baltimore's Handyman and Homeowner Community
Can mowing to short ruin your yard? Can letting it grow too high become a haven for pests?
The answer to both is YES.
Just like the Goldilocks, you have to find the perfect sweet spot because anything outside the acceptable "norm" is going to be a bear of a problem. One may think that cutting the grass extremely low will extend the time between cuts. Instead, you are actually creating a haven for weeds- which grow quicker and will offset the "extra growing height" you've allotted for.
Why not too short:
A homeowner who mows too short will damage the grass, weakening it's ability to fight off disease, weeds, foot traffic, or the occasional bear skat (or other outdoor animal). When you mow too low, not only do you rip away a majority of the grasses moisture, but you also allow more sunlight and airflow to evaporate and dry the ground. This is bad for grass, good for weeds. Also, when you mow low- you might skim the tops of small mounds in your yard that were otherwise unnoticeable- this will certainly become a place where weeds thrive and you NEVER get grass to regrow.
Why not too long:
Okay, the grass likes being tall. After all, that is when it produces seed which is basically what every living things is on earth to perform. But, tall grass can become a haven for snakes, ticks, mice, bugs. . . you name it. Plus, it can hamper natural evaporation and the extra moisture might cause mold and fungi to grow.
A freshly cut lawn is something any homeowner can enjoy--- but it is not natural. You have to take the right amount of care and like a Bonsai Tree- you are basically balancing the grass somewhere between drowning and dehydration (slight exaggeration).
Great chart- sorry it is in cm however, it shows how heights should be adjusted by time of year. |
The ultimate height depends on a number of circumstances which include shade, recent rainfall (or watering), and type of grass you have. Whenever mowing, you should also consider the weather report allowing additional height if dry weather is expected.
Many reports online state that optimal height is 2". This really depends on the weather. We never recommend going that low unless it is early spring or late fall. Even then, for most Tall Fescues, 2.5" is rule of thumb. Bump that up to 3" in the hot/ dry summer months and skip the mowing altogether during high drought conditions, if you can. **however- this all varies depending on the type of grass you have in your lawn. This article mostly pertains to tall fescues which are common in the Baltimore and Washington Area for most homeowners.
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