What is the one third rule for mowing?

Never remove more than one third of the grass blade height in a single mowing. Cutting more than that removes too much leaf surface at once, stresses the plant, and forces it to use stored energy to recover instead of growing roots. It is the most important mowing rule regardless of grass type.

Does cutting grass short mean mowing less often?

It does not work that way. Scalping removes the leaf surface the plant uses to produce energy, so it grows back weaker and thinner. Short turf also exposes soil to sunlight, which lets weed seeds germinate, and dries out faster on sandy soil. The result is usually more work, not less.

How high should I mow centipede grass?

Centipede is generally mowed at about one and a half to two inches in coastal South Carolina. Raising the height slightly during summer heat helps shade the soil and conserve moisture.

Mowing Height by Grass Type — Coastal South Carolina

Mowing · Lawn Care

Raising your mower deck costs nothing and does more for most lawns here than another bag of fertilizer.

Taller grass shades the soil, holds moisture, grows deeper roots, and crowds out weeds before they establish. Short grass does the opposite on every count — and on sandy coastal soil that dries fast, the difference is dramatic.

Heights for Coastal Carolina Turf

Centipede — 1.5 to 2 inches

The most common lawn in Horry County. Slow growing, so scalping damage takes a long time to recover. Raise toward 2 inches in summer heat.

St. Augustine — 2.5 to 4 inches

Wants to be tall. It's the best shade-tolerant option here, and height is part of how it competes in low light. Cutting St. Augustine short is a reliable way to thin it out.

Bermuda — 1 to 2 inches

The one grass here that genuinely tolerates a low cut, which is why it's used on golf courses and athletic fields. Needs frequent mowing and full sun to look right at that height.

Zoysia — 1 to 2.5 inches

Dense and slow growing. Tolerates a range of heights well. Its thickness is its main weed defense, so keep it healthy rather than short.

Bahia — 3 to 4 inches

Common on larger rural lots. Coarse and tough, sends up tall seed heads quickly — which is usually what drives mowing frequency rather than blade growth.

Not sure what you have?

Plenty of yards here are a mix, especially older properties and larger rural lots. Identifying turf type is the first thing we do on a free lawn inspection, because mowing height, fertilizer, and weed control all depend on it.

The One-Third Rule

Never remove more than a third of the blade in a single mowing. If your target height is 2 inches, mow when it reaches about 3.

Taking more than a third at once removes too much leaf surface, and the plant has to spend stored energy recovering instead of growing roots. That's why a lawn that got away from you looks rough for weeks after you finally cut it.

If it has gotten too tall, bring it down over two or three mowings a few days apart rather than all at once.

Why Short Grass Means More Weeds

Weed seeds need light to germinate. Tall, dense turf keeps the soil surface shaded and most of those seeds never start. Cut the lawn short and you expose bare soil to sunlight — which is an invitation.

Mowing height is genuinely a weed control tool, and it's free.

Other things that matter as much as height:

Sharp blades. A dull blade tears rather than cuts. Torn tips brown out and open the door to disease.
Vary your pattern. Mowing the same direction every time compacts soil and makes grass lean.
Leave the clippings. They return nitrogen and don't cause thatch, as long as you're not removing too much at once.

Seasonal Adjustments

Spring: start at the lower end of the range as growth resumes
Summer: raise up — shading the soil conserves moisture and reduces heat stress
Fall: maintain height as growth slows
Winter: a final cut before dormancy; don't scalp going into winter

Common Questions

Can I cut it short once, then let it grow?

That's the pattern that does the most damage. Scalping, then a long gap, then scalping again keeps the lawn constantly recovering. Consistent height and frequency beat both.

Should I bag clippings?

Usually not. Clippings break down quickly and return nutrients. Bag only if the lawn got badly overgrown and clippings are matting, or if you're dealing with an active disease.

How often should I mow?

Depends on growth rate, which changes with season and fertility. In peak summer growth, every week to ten days keeps you inside the one-third rule. Our mowing service runs bi-weekly, which suits most centipede lawns here.

See Mowing Pricing →