There’s no single “correct” mowing height for grass — it depends entirely on which variety you have. Cut a Bermuda lawn at St. Augustine height and it gets thin and weak. Cut St. Augustine at Bermuda height and you can kill it outright. Here’s the exact number for every grass we carry.
Quick Reference Table
| Grass Variety | Type | Mow Height | Mow Frequency |
|---|---|---|---|
| Raleigh St. Augustine | St. Augustine | 3–4 in | Every 7–10 days |
| Palmetto St. Augustine | St. Augustine | 3–4 in | Every 7–10 days |
| Amerishade St. Augustine | St. Augustine | 3.5–4 in | Every 7–10 days |
| Celebration Bermuda | Bermuda | 1–2 in | Every 5–7 days |
| Tifway 419 Bermuda | Bermuda | 0.5–1.5 in | Every 4–5 days |
| TifTuf Bermuda | Bermuda | 1–2 in | Every 5–7 days |
| Palisades Zoysia | Zoysia | 1.5–2.5 in | Every 7–10 days |
| Emerald Zoysia | Zoysia | 0.5–1 in | Every 5–7 days |
| Zeon Zoysia | Zoysia | 1–2 in | Every 7–10 days |
| Stadium Zoysia | Zoysia | 1.5–2.5 in | Every 7–10 days |
Not sure which variety you have? Check our grass type guides or call us — we can often tell from a photo.
Why Height Matters More Than People Think
St. Augustine has no rhizomes (underground stems) — all of its spread happens above ground through stolons. That means if you scalp it too short, there’s no underground reserve to recover from, and severe scalping can kill patches permanently. This is why St. Augustine gets mowed the tallest of anything on this list, and why it’s the one grass type you should never “cut low to save mowing trips.”
Bermuda and Zoysia both have rhizomes, so they’re more forgiving of a low cut and actually prefer it — mowing them too tall makes them look thin and leggy because they’re bred for a dense, low-profile canopy.
Reel mowers vs. rotary mowers: Emerald Zoysia in particular is mowed low enough (0.5-1 inch) that a standard rotary mower struggles to cut it cleanly at that height — a reel mower is strongly recommended for a clean cut without shredding the blade tips. Palisades and Zeon Zoysia both do fine with a sharp rotary mower.
The One-Third Rule (Applies to Every Grass Type)
Regardless of variety, never remove more than one-third of the blade height in a single mow. If your target height is 2 inches, that means mowing again once it hits 3 inches — not letting it get to 5 inches and chopping it back down in one pass.
Why this matters:
- Removing too much leaf tissue at once stresses the plant and slows recovery
- Heavy clippings left on the surface after a big cut can smother the lawn and invite fungus
- Frequent, moderate mowing produces a denser, healthier lawn than infrequent, drastic mowing
If your lawn ever gets away from you (vacation, rain delay, etc.), raise the mower deck and take it down gradually over 2-3 mows instead of scalping it back to target height in one shot.
Seasonal Adjustments
Mow at the top of the recommended range in peak summer heat (July-August) — taller grass shades its own root zone, holds moisture better, and looks greener under stress. Going into winter dormancy, gradually lower Bermuda and Zoysia toward the bottom of their range for the final mows of the season to reduce matting; leave St. Augustine at its normal height year-round.
Sharp Blades Are Not Optional
A dull blade doesn’t cut grass — it tears it. Torn grass tips turn brown and ragged within a day or two, which looks like disease or drought stress but is actually just blade damage. Sharpen or replace mower blades at least once per season, more often if you’re mowing a large area regularly.
Just Call Us
If your lawn isn’t responding the way you’d expect even with the right mowing height, it might be a watering, fertilizing, or disease issue instead — call us at (281) 259-6375 and we’ll help you figure out what’s going on. Need new sod or a mower height recommendation for a grass type you don’t see here? Get a free quote or stop by our Magnolia or Tomball yard.