How short to mow before winter

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GUIDE · 5 MIN READ · UPDATED OCT 6, 2026

For the last mow before winter, cut the lawn toward the lower end of its normal range, not shorter. For most cool-season lawns that means about 2.5 inches; for warm-season lawns, stay within the usual range for your grass. Step the height down gradually over the final few mows instead of scalping it in one pass.

Grass type	Normal range	Final mow target
Tall fescue	2.5–4 in	About 2.5–3 in
Kentucky bluegrass, fine fescue	2.5–3.5 in	About 2.5 in
Perennial ryegrass	1.5–2.5 in	About 1.5–2 in
St. Augustine	2.5–4 in	Stay in normal range
Bermuda, zoysia, centipede	1–2 in	Stay in normal range

STEP 01

Why the last cut height matters

The height you leave going into winter sets up how the lawn looks in spring. Grass left too long tends to flop over and mat down under snow, rain and fallen leaves. Matted grass stays damp and is a favorite spot for snow mold and other fungal problems, and it can shelter voles that tunnel through the thatch. That’s the main reason to bring the height down in fall.

Going too short causes the opposite problem. Grass cut far below its range has less leaf to store energy, fewer roots to hold moisture, and less protection for the crown, the growing point at the base of the plant. A scalped lawn goes into winter weak and often comes out thin and patchy. For how this fits into the rest of the year, see our guide to the lawn year.

STEP 02

Step the height down over several mows

If you have kept a cool-season lawn tall through summer, don’t drop it straight to the final height. Lower the deck one notch every mow or two through mid and late fall. The one-third rule still applies: never take off more than a third of the blade in a single cut. Taking it down gradually lets the plant adjust and avoids the shock and browning that come with scalping the lawn.

Not sure what each notch on your mower means in inches? Measure from a hard surface to the blade tip, or follow our steps on setting your mower’s cutting height.

STEP 03

Warm-season lawns: keep it normal

Bermuda, zoysia, centipede and St. Augustine go dormant and turn tan when temperatures drop. There’s no need to cut them extra short before that happens. Keep mowing at the usual height until growth stops. St. Augustine in particular does better left at the middle of its 2.5–4 inch range going into cooler weather, since cutting it low can leave it more exposed to cold damage.

STEP 04

Clear the leaves before the final cut

A thick layer of leaves left on the lawn over winter blocks light and traps moisture, which does more harm than a slightly long cut. You have two options:

• Mulch them with the mower when the layer is light, so the pieces settle between the blades.
• Rake or bag them when the layer is heavy enough to hide the grass.

Our page on mulch mowing leaves explains how to tell which approach your lawn needs.

STEP 05

Time the final cut

The final mow should land just as growth slows to a stop, typically after the first light frosts but before the ground freezes. Mow on a dry day and never on frosted grass, since frozen blades snap and leave brown footprints. Our page on when to stop mowing for the year covers the signals in more detail. If the fall schedule is tight, you can book a final fall mow with a local crew. For budgeting, check typical mowing and cleanup prices; leaf removal typically runs $100–$300 per visit (HomeGuide, 2026).

Related

• When to stop mowing for the year
• When to start mowing in spring
• Mowing in summer heat: when and how high