How to Grind a Stump with a Rental Grinder: Setup, Passes, Cleanup
Grinding a 24-inch stump yourself: $285 in a day's rental, gear and topsoil, 2–4 hours — a pro takes 20 minutes.
- Rent the machine to the stump: a mini grinder for a stump you can straddle, a 13–25 hp walk-behind for 24 inches, a tracked machine for anything bigger. Underpowered means a second rental day.
- Before the wheel touches wood: call 811, dig around the stump, pull every rock, wire and edging strip, cut the stump as low as the chainsaw allows, and shield windows and cars.
- Grind in shallow sweeps — drop the wheel an inch or two, swing it side to side across the stump, step forward, repeat — down to 6–8 inches below grade, then chase the roots out.
- Face shield, ear protection, no one within 20 feet. Then rake out the chips, backfill with soil, seed, and expect to top it up once.
Before you start
Read the cost comparison first, because the numbers don’t favor renting for one stump: a 24-inch stump is about $285 in rental, gear, fuel and topsoil against $240 from a pro who’s done in twenty minutes. The rental makes sense when there are several stumps to grind on the same day — five of them are about $330 against $500 — or a neighbor’s to share the machine with.
It also makes sense only if the stumps are in the open. Near a gas line, a foundation, a septic field, a fence or a window, the pro’s insurance and control are what you’re paying for; a rental machine in a tight spot is the one part of this job that goes badly.
What you need
The right grinder for the stump — mini, mid-size or tracked — and a trailer or delivery to get it there; a face shield, safety glasses, hearing protection and gloves; fuel; plywood or a tarp to shield anything within throwing range; topsoil, grass seed and straw for the hole. A chainsaw, a mattock, a shovel, a rake and a wheelbarrow you probably own. The priced list is on the cost page. The teeth on a rental grinder are yours to replace at $10–$20 each; the rock you didn’t dig out is the usual reason.
The two things that decide how it goes
The machine matches the stump. A mini grinder on a 30-inch oak is a lost day and a second rental. Ask the yard what the machine is rated for, and rent up.
The wheel never meets anything but wood. Rocks, wire and buried edging break teeth; gas and irrigation lines are worse. Call 811, dig around the stump, pull what you find, and hand-dig near the marks. The surface roots come out last, in the same shallow sweeps, and the grindings go on a bed, not in the hole.
Step by step
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Measure, count, and decide
Measure each stump at the soil line at its widest, including the root flare. Count them. One stump under 30 inches: get a pro's price before renting — the minimum charge is about the rental. Several: rent. Call 811 and wait for the marks.
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Reserve the right machine
Mini for stumps you can straddle, mid-size for 24 inches, tracked for bigger or many. Confirm cutting depth, how it moves, deposit, delivery, and the per-tooth charge. Pick it up early; the day is the meter.
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Prep the stump
Dig the soil back from the stump and roots with a mattock. Pull rocks, wire, nails, edging and anything that isn't wood — each one costs teeth. Cut the stump as low as the chainsaw safely allows. Set plywood or a tarp between the stump and any window, car or fence within 30 feet, and clear people and pets.
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Gear up and position
Face shield over safety glasses, hearing protection, gloves, boots, long sleeves. Roll or drive the grinder into place with the wheel above the near edge of the stump, on stable ground, with the engine off. Read the controls: wheel clutch, wheel raise and lower, side-to-side swing, and the kill switch.
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Grind the top in sweeps
Start the wheel, lower it an inch or two into the wood, and swing it side to side across the stump. Raise, advance a few inches, lower, sweep. Work across the whole top in layers. Let the machine set the pace; forcing it stalls the wheel and breaks teeth. Stop and pull anything that clinks.
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Go below grade, then chase the roots
Keep layering down until the wheel is 6–8 inches below the surrounding soil across the whole footprint. Then reposition around the stump and sweep along each surface root a few inches below grade until it tapers out. Stay off the 811 marks; hand-dig there.
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Rake, fill, seed
Shut down, let the wheel stop, and rake the grindings out into a wheelbarrow. Backfill the hole with topsoil, tamp, overfill an inch or two, seed, straw, water. Return the machine cleaned, with fuel topped, and note any teeth you replaced.
What would this cost you? The stump grinding calculator prices the DIY version with the tools you already own and a value on your time, next to a pro quote.
Frequently asked questions
Which stump grinder should I rent?
Mini walk-behind (9–13 hp, big-box rental, $60–$90 a half day): stumps up to 12–16 inches, one or two of them. Mid-size walk-behind or small tracked (13–25 hp, rental yard, $150–$250 a day): stumps to 24–30 inches, or several smaller ones. Large tracked or towed (25–35 hp, $250–$400 a day): a 36-inch hardwood, or a lot. Ask the yard for the machine's cutting depth and width, and how it moves — a tracked machine drives itself, a towed one needs a hitch, a walk-behind needs a ramp and two people.
Do I have to call 811 to grind a stump?
Yes, if you're going below grade, which you are. Gas, water, irrigation, sprinkler wire and low-voltage lighting all run near old trees, and a grinder wheel doesn't stop for a pipe. The locate is free and takes a few business days; the marks tell you where to hand-dig instead of grind. A pro's insurance covers a strike; your homeowner's policy may not, and a gas line is not a claim you want to make.
How low should I cut the stump first?
As close to the ground as the chainsaw can go without hitting dirt — 2–6 inches. Every inch of stump above grade is an inch the grinder has to chew from the top, and a rental machine is slow. Clear the soil and rocks back from the base first so the chain doesn't dull, and cut from the side, not straight down.
How do I actually run the grinder?
Position the wheel above the stump's near edge, start the wheel, lower it into the wood an inch or two, and swing the machine's handle to sweep the wheel side to side across the stump. Raise, step forward a few inches, lower, sweep again. Work across the whole top in layers until you're 6–8 inches below grade, then move around the stump and do the roots the same way. Never plunge the wheel; never stand in line with the throw; keep the guard down.
How long does it take to grind a stump?
With a rental: 30–60 minutes for a 12-inch softwood, 2–4 hours for a 24-inch stump, 4–6 for a 36-inch hardwood with roots, plus an hour of setup and cleanup and the trip to the yard. A pro's machine is 5–10 times faster. If the stump is bigger than the machine, the day ends with it half done — size the rental up, not down.
What about the roots?
Grind the surface roots that flare out from the stump by sweeping the wheel along them a few inches below grade until they're small enough to ignore. Anything more than a few feet from the stump can stay and rot under the lawn. Roots under a future patio, slab or fence line should come out — that's what the deep grind or an excavator is for.
What do I do with the hole and the chips?
Rake the grindings out — a 24-inch stump makes one or two wheelbarrows — and use them as mulch on beds, not on the lawn. Backfill the hole with topsoil, tamp it, overfill by an inch or two, seed and cover with straw. It'll settle as the roots underneath decay; top it up next spring. Leaving the chips in the hole is easier and turns into a soft depression for a year or two.
Sources
- Tree Trimmers and Pruners (SOC 37-3013), Occupational Employment and Wage Statistics , U.S. Bureau of Labor Statistics, 2026-04
- How Much Does Stump Grinding Cost? , HomeGuide, 2026-09
- Stump Grinder Rental Costs , HomeGuide, 2026-09
- Stump Grinding Cost , Angi, 2026-09
- What Does Stump Grinding Cost? , HomeAdvisor, 2026-09
- Pricing Guide: How Much Does Stump Grinding Cost? , LawnStarter, 2026-09
- Average Cost of Stump Grinding and Removal , Forbes Home, 2026-09
- Call 811 Before You Dig , Common Ground Alliance, 2026-09
Figures last reviewed . See how we estimate.