The Right Mowing Height for Florida Grass
Cutting low is the most common self-inflicted lawn injury in Florida. Here's what height each grass wants — and why taller almost always wins.
The One-Third Rule
One rule covers most mowing mistakes: never remove more than a third of the grass blade in a single cut. Cut deeper than that and the plant dumps its energy into regrowing leaf instead of roots — the lawn turns pale, thins out, and spends a week recovering instead of growing.
The one-third rule is also why "let it get tall, then cut it short" doesn't work in a Florida summer. If St. Augustine gets away to six inches, the fix is two cuts a few days apart — not one cut down to three. That single deep cut is scalping, and in July heat it opens the door to weeds, chinch bugs, and sun-scorched soil all at once.
Height by Grass Type
St. Augustine: 3.5–4 inches
Keep it tall. St. Augustine stores energy in its long blades and shades its own root zone — a high cut is the cheapest drought protection and weed control it can get. Most of the sad, straw-colored St. Augustine in North Brevard is being mowed at two-and-a-half inches by someone trying to stretch the time between cuts.
Bahia: 3–4 inches
Bahia is forgiving on height but relentless on frequency in summer — its tall V-shaped seed stalks shoot up within days of a mow from late spring through early fall. The grass is healthy either way; a weekly cut in season is simply what keeps a Bahia lot looking maintained instead of shaggy.
Zoysia: 1.5–2.5 inches
The exception in the group — Zoysia is dense enough to be cut low and look manicured. It still obeys the one-third rule, and because it grows tight, a sharp blade matters even more: a dull one tears at the dense canopy and leaves a brown haze over the whole lawn.
Blades, Frequency, and Clippings
Keep the blade sharp
A sharp blade slices; a dull one shreds. Shredded tips dry out white-brown within a day, which is why a lawn can look worse after mowing than before. Sandy Florida soil dulls blades fast — sharpening a few times a season is maintenance, not perfectionism.
Match frequency to the season
Weekly from roughly April through October, when warm-season grass grows fast enough that skipping a week forces a rule-breaking cut. From November through March, bi-weekly holds most North Brevard lawns. That's the same rhythm Big Mike's mowing routes run on.
Leave the clippings
Clippings from a regular cut disappear into the lawn in days and return nitrogen as they break down — free fertilizer. The only time to bag is when the grass got away and the cut leaves heavy clumps that would smother the turf underneath.
Mowing FAQ
Should I cut the grass shorter so I can mow less often?
No — it backfires in Florida. Cutting St. Augustine short stresses it, exposes the soil to summer sun, and invites weeds and chinch bugs into the thin spots. Taller grass shades its own roots and holds moisture. If mowing frequency is the problem, the fix is a mowing route, not a lower deck.
Why does my lawn look brown right after mowing?
Usually one of two things: dull blades shredding the grass tips so they dry out white-brown, or scalping — the deck set low enough to cut into the stems below the green blade. Sharp blades and a higher deck setting fix most of it within a cut or two.
Should I bag my grass clippings?
Usually no. Clippings from a regular cut break down fast and return nitrogen to the lawn — free fertilizer. The exception is when the grass got away and you're cutting off heavy, clumping growth; those mats should be bagged or raked so they don't smother the turf underneath.
Want It Cut Right Every Week?
Get on a Big Mike's mowing route — right height, sharp blades, same day every week, no scalped corners.