If you’re a homeowner who cuts the grass short to “get more time between mows,” it may be time to change your strategy.
According to lawn care pros, cutting your lawn too short or “scalping” can stress your turf, encourage weed growth, and even attract pests.
So, what’s the secret to a healthy, lush lawn? Height. Landscapers agree that a slightly taller cut, the right timing, and well-maintained equipment can transform a patchy lawn into a thriving green space.
The ideal height for your grass depends on where you live
The ideal grass height depends on your region and grass type.
“For cool-season grasses in Northern regions, like fescue and Kentucky bluegrass, I recommend the higher the better and to never cut below 3.5 inches,” says Garrett Lang, lawn expert at Lex Lawn & Irrigation in New Albany, IN. “The ideal grass height for me is 4 inches. I cut my lawn to 4.75 inches.”
When it comes to warm-season grasses—such as Bermuda and St. Augustine—in Southern regions, the sweet spot is anywhere between 1.5 to 2.5 inches. These grasses tolerate shorter cuts but still benefit from moderate height during droughts.
Regardless of where you live, make sure you don’t cut more than one-third of the grass blade at once.
“Your grass uses its blades to create energy via photosynthesis,” Lang explains. “Think of the blades as solar panels collecting energy. When you cut more than a third of the blade, the plant is now deprived of that surface area that it needs to create energy and stay healthy.”
While cutting the grass short might seem like a homeowner hack, it can actually do more harm than good as it creates a barrier from the sun to the soil.
“Think of a heavily wooded forest. The tree’s canopy uses all the sunlight and shades the area below,” Lang says. “The plants or trees underneath have very limited sunlight to use for photosynthesis. This is the same in your lawn.”
How often should you mow—and when’s the best time of day?
The million dollar question is, “What’s the ideal mowing frequency?
According to Lang, mowing once a week is fine during the spring and fall—just remember to mow often enough that you are only taking off one-third of the grass blade in a single mowing.
During the hot summer months, you can space out your mowings a little longer, such as every 10 days or so. Whatever you do, don’t mow when the grass is wet or dewy, unless you want to deal with clumping and disease. Also, make sure it’s not too hot when mowing, or you might scorch the grass.
If possible, put your lawn mower to work mid-morning (8 a.m.–10 a.m.) or early evening (4 p.m.–6 p.m.) when the grass is dry but not under peak heat stress.
Don’t forget mower maintenance—it affects your lawn’s health
A well-maintained mower can help you achieve cleaner cuts, reduce lawn disease, and extend mower life. To keep your mower in tip-top shape, sharpen its blades every 20 to 25 hours of use or at least once per season. Also, clean under the deck regularly to avoid grass build-up, and check oil and air filters as part of your monthly maintenance.
Don’t forget to use the right blade height settings for your specific grass type. And remember: Dull mower blades can tear grass instead of cutting it, leading to frayed, brown tips and increased disease risk.
The condition of a lawn mower matters. If you’re longing for a beautiful, lush lawn, give it (and your equipment) the TLC it deserves.
Frequently asked questions
Yes, it’s a good idea to alter your mower height based on local weather conditions which change throughout the year. Lawn experts recommend mowing your grass slightly higher during peak summer heat and gradually lowering it as temps begin to cool down in the fall.
If you don’t want to worry about mowing your lawn and maintaining the proper grass height yourself, you could outsource the task to professionals. According to Angi, you’ll pay anywhere between $49 and $203 per visit, depending on your location and the size of your yard.
No, lawn experts suggest switching things up and alternating the direction you mow your lawn. This strategy can help reduce ruts, prevent soil compaction, encourage grass to grow in a straight, upright position, and ultimately improve curb appeal.
