How High to Mow Grass, and Why the Height Matters
Fescue and the other cool-season grasses want about three to four inches, and no single cut should take more than a third of the blade.
Free, no-obligation estimates. We answer the phone or call back the same working day.
The right mowing height for cool-season grass
Cool-season grass such as fescue is mowed at about three to four inches, which is where the deck belongs on the cool-season lawns around Providence.
That height is not a matter of looks. A lawn kept at three to four inches shades out weeds before they get going and protects the roots when the summer heat arrives, so the grass is doing part of the weed control and part of the watering on its own.
It is the height the research-based mowing guidance for northeastern lawns from the Cornell Turfgrass Program points owners toward, and it is the number to remember if you only remember one.
The height for fescue
Three to four inches
Shades out weeds
A tall, thick canopy keeps light off the soil where weed seed waits.
Protects roots in heat
Taller blades shade the ground, so the roots under them stay cooler.
The one-third rule
The "one-third rule" means a single cut never takes more than a third of the grass blade, however long the lawn has got.
The blade is where the grass makes its food. Take off a third and the plant carries on; take off half or more at once and it spends the next weeks recovering instead of thickening, which is when the lawn starts to look thin and stressed.
That is why the first cut of the season is made at the highest setting on the mower. If grass has got away from you, it comes down in steps over a few visits, never all in one pass.
Rather not think about the deck height?
Call with the address and tell us what the lawn is like. On every mowing visit we cut at the height that suits your turf, and the whole job is quoted before we start.
The estimate is free and carries no obligation.
Cutting too short or letting it grow long
Grass cut too short is weak and lets weeds in, and grass left too long harbors pests, so both ends of the range cost you the lawn.
Cut too short
A scalped lawn is weak. Thin blades leave bare soil in the sun, and that open ground is where crabgrass and broadleaf weeds move in.
About three to four inches
Thick enough to shade out weeds and keep the roots cool, and short enough to look kept. Cut little and often to stay here.
Left too long
Grass that goes weeks without a cut lies over and harbors pests, and bringing it back down in one go breaks the one-third rule.
Sharp blades and a clean cut
Sharp blades cut the grass cleanly instead of tearing it, and a clean cut is what keeps the turf thick.
A dull blade rips the tip off each grass blade and leaves a ragged, split end that browns over. Across a whole lawn that shows as a dull, whitish cast, and the torn grass is slower to grow back in.
It matters most on a new lawn. We make the first cut once the grass is about three inches tall, and only with sharp blades, so the young grass is cut rather than pulled. Sharp blades, clean edging and well-timed weed control are, between them, most of what keeps an established lawn thick.
Mowing at the right height every visit
A mowing service sets the deck for the turf type on every visit, so the height is right whether or not anyone at home is keeping track.
That is the part of the job most owners hand off first. The grass type, the shade and the season all change where the deck should sit, and on a plan the person cutting your lawn already knows it.
What a lawn mowing service visit covers
A routine mowing visit covers the cut, string trimming, edging and blowing, all in the same trip.
Every routine visit takes in the same work:
- Mowing at the right height for the turf type
- "String trimming" where the mower cannot reach
- Edging along the walks, drive and other hardscapes
- Blowing clippings and debris off the hard surfaces
What neighbors say
These are our Google reviews from owners around Providence, in their own words.
William has been taking care of our yard since the spring, and we couldn’t be happier. What began as a simple spring clean-up has turned into ongoing lawn and yard maintenance. He’s incredibly dependable, does meticulous work, and is an absolute pleasure to work with — not to mention very reasonably priced. I highly recommend him to anyone looking for a reliable and detail-oriented landscaper in the area.
William was very professional from the start with clear communication and pricing. He removed 4 large, old shrubs and trimmed others, cleaned up the beds and edged the area. He also took away all the yard waste and left the area clean. Pleasant to work with; highly recommended
I've been using Mela Landscapes for a few months and they are by far the best landscapers I've used in the Providence area. They are dependable, do an amazing job, and are a pleasure to work with. I highly recommend them.
Hand us the mower and keep the lawn thick
Call and tell us the address and how often the lawn needs cutting. We come out, look at the grass and quote the whole job before any work starts.
Calls outside working hours go to voicemail, and we return them the next working morning.
- Free, no-obligation estimates
- We show up when we say we will
- We clean up when the work is done