What Is The Correct Lawn Mowing Height

What Is The Best Height To Mow My Lawn?

Lawn MowingThis is a question we get asked a lot, by both our clients and by homeowners. The reason it is asked is simple; the lower I mow my lawn, the less I have to mow it and the sharper it will look, right? Well, not exactly.

The general rule about how much of your grass can be cut if with each mowing is about 1/3 of the leaf blade. Removing more than 1/3 of the leaf blade at a time can send the plants into shock which will cause your lawn to weaken. The plant needs enough green space to create energy from the sun the same way our bodies need enough food to allow us to function.

The larger issue, however, is that the shorter the lawn, the less healthy it will be. The shorter the grass blade is, the less the lower part of the blade and the root system will be shaded. This means that the plant will lose a lot of water thtough transpiration and evaporation. In the summer, this can have a devastating effect on your lawn. It will essentially dry out.

Your lawn will also have a lot more weeds. Consider this; the longer the grass blade is, the less room there is for weeds to grow. Conversely, the shorter the grass blades, the more room there is for weeds to grow and, eventually, dominate the lawn. It is a simple matter of competition for space.

We recently visited the University of Maryland Turfgrass Research Facility in College Park, Maryland. It is a lawn nerd’s heaven! There, we observed the four test plots pictured below showing the effects of mowing grass at 1”, 2”, 3” and 4” heights. Each plot was fertilized the same, similar to how we fertilize our client’s lawns. The test plots received no weed control applications.

Notice how poor the 1” and 2” lawns look. They are thin, off color and full of weeds. Conversely, the 3” and 4” lawns are thick, have better color and fewer weeds. The difference is strikingly clear.

From these test plots it is clear that mowing lawns short does not result in a nice looking lawn. In fact, just the opposite, an under colored, patchy lawn with weeds, at best. At the same time, we can understand why homeowners would not want their lawn mowed at 4” as it can become sloppy looking quickly. Our best recommendation is to set mowers at 3”.  At this height, a lawn still looks neat and crisp and has the benefit of being able to crowd out weeds.

Related Posts:

7 Things To Know About Watering Your Lawn

5 Things To Look For In Your Next Lawn Care Company

Should I Aerate and Overseed My Lawn?


Remember, Allentuck Landscaping Co. is always here to help you design, install, construct and maintain you lawn and landscape.  Give us a call!

 Allentuck Landscaping Co. is Your Residential Landscape CompanyCustomer Service

Phone: 301-5-515-1900 

Email: info@allentucklandscaping.com 

Proudly serving Chevy Chase, Bethesda, Potomac, Darnestown, North Potomac, Rockville, Gaithersburg, Boyds, Germantown, Clarksburg, Ijamsville, Urbana and Frederick.

Project Spotlight: Complete Patio Remodel Rockville MD

The Allentuck Team Transformed This Rockville, MD Home with a Complete Patio Remodel At Allentuck Landscaping Company, we’re proud of the work we do, and we’re truly committed to our motto of Improving Lives Through Landscaping. Nothing makes us happier than totally transforming an outdoor space and leaving our clients delighted. To share our favorite projects, we’re starting a Project Spotlights blog series, which will be our space to highlight some of the incredible work we’ve done over the years. 


Patio Drainage Options: Why They’re Critical

Proper Drainage Is Essential for Any Hardscape—Here Are a Few Options for Patio Drainage Though it might not factor into your dream vision for your home, patio drainage is an essential part of any landscaping project, and particularly for hardscapes. Without good drainage, you run the risk of annoying puddles, damage to foundation, excessive erosion, and potentially disrupting your new hardscapes through freezing and thawing. Luckily, there are many options available to ensure optimal patio drainage! Here at Allentuck Landscaping


8 Creative LED Landscape Lighting Ideas to Transform Your Home

Best LED Landscape Lighting Ideas for Your Home Landscape lighting can transform your outdoor space, enhancing its beauty and creating a welcoming atmosphere. LED landscape lighting, in particular, offers energy efficiency and longevity, making it a smart investment. In this article, we’ll explore eight LED landscape lighting ideas to elevate your home’s exterior. What is LED Lighting? LED (Light Emitting Diode) lighting is a low-voltage, energy-efficient lighting option. While it may be slightly more expensive than traditional halogen lighting, the


Grading and Yard Drainage: How To Improve Your Home’s Drainage

Proper Grading Is Critical for Improving Yard Drainage Grading and yard drainage are two important factors to consider when maintaining a healthy and attractive home landscape. Without proper grading, water can pool in areas of your lawn and cause damage to the grass, soil, and plants. Improving your home’s yard drainage is essential for keeping your yard looking its best and avoiding costly repairs to landscaping features or even your home’s foundation. In this blog post, we will discuss the


How To Design An Amazing Outdoor Kitchen

Outdoor kitchens have become increasingly popular in recent years, and for good reason. They allow you to enjoy cooking and dining al fresco, while also adding value to your home. But, designing an outdoor kitchen can be a daunting task, especially if you’re not sure where to start. Here are some tips for creating a functional and beautiful outdoor kitchen that will be the envy of all your neighbors. Start with a Plan Before you begin designing your outdoor kitchen,


7 Common Spring Pests In Maryland Gardens

As the weather warms up and spring approaches, many gardeners in Maryland are eagerly planning their spring garden. However, as beautiful as ornamental plants can be, they are also susceptible to a variety of common spring pests that can harm their health and appearance. From scale insects to spider mites, thrips, mealybugs, and whiteflies, there are many pests that can attack and damage ornamental garden plants in Maryland. In this blog post, we’ll discuss seven common spring pest issues that