Every fall, the question comes up. “When should I make the last cut? Should I cut it short or leave it tall? What about the leaves?” After 40+ years of caring for Maine lawns, here’s the right answer for our region.
The short version: keep mowing as long as the grass is growing, then make your final cut significantly shorter than usual. We’ll explain why.
If It’s Green, It’s Still Growing
Most homeowners stop mowing too early. The first cool week of October hits, the leaves start dropping, and the mower goes into the shed for the season. That’s a mistake.
If your lawn is still green, it’s still pushing top growth, even if it’s slow. Skipping the last few weeks of mowing leaves you with grass that’s too tall going into winter. Tall grass mats down under snow cover, traps moisture against the crown, and creates the conditions for snow mold to set up.
Snow mold is a winter fungal issue we see across Maine every spring. Pink and white circular patches that show up after the snow melts. The lawn usually recovers, but the damaged crowns slow your spring green-up by weeks. Almost all of it is preventable with the right fall mowing strategy.
Cut Short for the Final Cut
The most important point in this whole post: your last cut of the season should be cut significantly shorter than you’ve been mowing all summer.
All season we recommend mowing at 3 to 3.5 inches. For your final cut of the year, drop down to 0.75 to 1 inch.
That sounds aggressive, and against everything we tell you about cutting too short during the growing season. Here’s the reasoning:
- Short grass doesn’t mat. Tall grass blades fold over under snowpack and create dense, wet mats. Mats hold moisture against the crown of the plant for weeks. That’s the perfect environment for snow mold.
- Short grass lets sunlight reach the soil in early spring. When the snow finally clears in March or early April, sunlight needs to reach the soil to warm it and wake up the lawn. Tall, matted grass blocks light and slows the green-up.
- Short grass dries out faster after snowmelt. Faster drying means less time for fungal pathogens to work.
- The grass is dormant or near-dormant by the final cut. Cutting short on dormant grass doesn’t stress the plant the way it would in July. The crown is the part that matters, and the crown is below the cut height.
Don’t go shorter than 0.75 inch. Scalping into the soil damages the crown. Stay in the 0.75 to 1 inch range and you’re set.
Timing the Final Cut
The final cut goes down after the lawn has stopped actively growing. In central and coastal Maine, that’s typically the first or second week of November, after the lawn has experienced 2 to 3 frosts.
Don’t cut early just because the calendar says it’s “fall.” A warm October can keep the lawn growing well past Halloween. Watch the lawn, not the calendar. If it’s still pushing visible green growth, mow it. When growth visibly stops and the grass is going dormant, that’s when you go short for the final cut.
Get Down Gradually, Not All At Once
Don’t drop from 3.5 inches to 0.75 inches in one cut. That removes way more than the 1/3 rule allows and stresses what’s left of the lawn.
Step it down over your last 2 or 3 cuts:
- Mid-October: Drop from 3.5 inches to 3 inches
- Late October: Drop to 2.5 inches
- Final cut (early-to-mid November after 2-3 frosts): 0.75 to 1 inch
This gradual reduction lets the lawn adjust without removing more than 1/3 of the leaf blade in any single cut.
Don’t Leave Clumps
On the final cut especially, make sure you remove the clippings. Take the bag off, rake them up, blow them off, whatever it takes. Clumps of cut grass left on the lawn through winter create the same matting problem we’re trying to prevent. Wet, matted, decomposing grass is exactly where snow mold sets up.
If the lawn was dry when you cut and the clippings dispersed evenly, you’re fine. If you see clumps, deal with them.
The Leaf Situation
The other big November priority is leaves.
A thin layer of leaves can be mulched in with the mower. The shredded leaf material is good for the soil and breaks down by spring. A thick layer (more than you can shred to fragments in one or two passes) needs to come off the lawn entirely. Rake, blow, or vacuum, but get them gone.
Leaves left on the lawn through winter act exactly like a piece of plywood you’d left on the grass for a week. They smother the turf underneath. By spring you’ll have dead patchy areas exactly where the leaves sat. Lawns under maples and oaks suffer the worst if leaves aren’t managed.
What About Fertilizing in November?
By the time you’re making the final cut, the lawn is dormant or near-dormant. November is too late for the fall feeding that actually matters. The “winterizer” feeding goes down in September. November fertilizer is mostly wasted product.
The exception: if the soil is still warm and the lawn is still actively growing in early November, a light feeding can pay off. But the typical Maine November is too cold for active uptake. Save your money.
What About Irrigation Lines?
If you have an in-ground irrigation system, the final cut window is also when you want the system blown out. Get it done before sustained freezing temperatures arrive. A frozen sprinkler line in December is an expensive repair.
The Maine Final-Cut Checklist
- Wait until the lawn has stopped actively growing (after 2 to 3 frosts, typically early-to-mid November)
- Step the mower height down over your last 2 or 3 cuts
- Make the final cut at 0.75 to 1 inch
- Bag clippings or rake them up afterward
- Get leaves off the lawn before the snow flies
- Skip the November feeding (do fall feeding in September instead)
- Blow out irrigation lines
Want Us to Handle This?
Most of our customers are on a full-season program where we handle the timing, treatments, and seasonal schedule. We don’t mow lawns ourselves, but we coordinate with our customers’ mowing schedule and tell you exactly when to drop the height for the final cut based on the actual conditions each year (not a calendar guess).
If you want a real Maine lawn care plan instead of a national-calendar program, give us a call at 207-989-1433 or request a free quote. Our turf management programs are built around exactly this kind of Maine-specific timing.
Jeremy & the Green Thumb Team