How often should you mow your lawn?
The 1/3 rule, the right height for heat, and why not to bag your clippings.
By The T.A.P. Team · June 2024 · 4 min read
How often you mow depends on how fast the grass is growing — the real rule is to never cut more than one-third of the blade height at a time. In North Texas's growing season that usually means weekly, and more often during peak spring and early-summer growth. Just as important is mowing height: taller grass shades its own roots and the soil, which matters a lot in our heat. Here's how to mow for a healthier lawn.
- Never cut more than 1/3 of the blade at once
- Usually weekly in the growing season
- Mow taller in summer heat (shades roots)
- Keep mower blades sharp
- Leave clippings (grasscycling) — free fertilizer
The one-third rule
The guiding rule of mowing is never to remove more than a third of the grass blade in a single cut. Taking off more shocks the grass and scalps it, stressing the roots. So you mow frequently enough — usually weekly, and more often in the flush of spring and early-summer growth — that each cut only trims the top third. Let the growth rate set the schedule, not the calendar.
Height matters in the Texas heat
Set your mower to the higher end of your grass's recommended range, especially in summer. Taller blades shade the soil and the crown, keeping roots cooler and the ground moister — a real advantage in our heat — and they crowd out weeds. Scalping the lawn short bakes it and invites problems.
Sharp blades
A dull mower blade tears the grass instead of cutting it, leaving ragged, browned tips that stress the lawn and open the door to disease. Sharpen the blade regularly (a few times a season) so every cut is clean. It's a small thing that visibly improves lawn health.
Leave the clippings
Bagging clippings throws away free fertilizer. "Grasscycling" — leaving the clippings on the lawn when you mow regularly — returns nitrogen to the soil and doesn't cause thatch (that's a myth for a well-mowed lawn). It cuts your fertilizer needs and the mess.
| Do | Skip |
|---|---|
| Cut only the top 1/3 | Scalping (cutting too much) |
| Mow weekly in growing season | A fixed date regardless of growth |
| Mow taller in summer | Cutting short in the heat |
| Sharpen the blade | Tearing with a dull blade |
| Leave clippings (grasscycle) | Bagging every time |
The healthiest lawns follow three mowing habits: never cut more than a third at once (so mow by growth rate, usually weekly), keep the grass on the taller side in summer to shade its roots, and use a sharp blade for a clean cut. Add grasscycling and you feed the lawn for free. Scalping short and mowing on a rigid calendar is what stresses lawns into trouble.
Mowing through a DFW summer
Our heat makes mowing height especially important — a taller cut keeps North Texas lawns cooler and more drought-resilient across Plano, Frisco, and Allen. We offer full lawn maintenance. See our landscaping team.
The short version
- Never cut more than one-third of the grass blade in a single mow.
- That usually means weekly mowing in the growing season, more in peak growth.
- Mow on the taller side in summer to shade roots and keep soil moist.
- A sharp blade cuts cleanly; a dull one tears and stresses the grass.
- Leave the clippings (grasscycling) — free nitrogen, and no thatch if you mow regularly.
- Scalping the lawn short in the heat bakes it and invites weeds and disease.
Mowing your lawn — frequently asked questions
Want lawn care handled?
Get full-service mowing and maintenance. Serving Dallas–Fort Worth & North Texas for over 25 years.