These get used interchangeably and they’re two different jobs with two very different prices. Grinding chews the stump into chips below grade and leaves the root system in the ground to decay. Removal extracts the stump and major roots entirely, which means excavation, a substantial hole, and disturbed soil across a wide area.
For the overwhelming majority of Boise properties, grinding is the right answer. There are four situations where it isn’t, and knowing which one you’re in before you book saves either money or a redo.
Got a stump to deal with? Call (509) 351-8404 or request a free on-site estimate.
The Quick Answer
| Grinding | Full removal | |
|---|---|---|
| What happens | Stump chipped to below grade | Stump and major roots excavated |
| Typical depth | 6 to 12 inches below grade, deeper on request | Entire root plate |
| Cost | $75 to $400 per stump | Substantially more, quoted per site |
| As part of a removal | $150 to $500 add-on | Quoted separately |
| Time on site | Usually under an hour per stump | Hours, with equipment access needed |
| Site damage | Minimal | Significant, large hole and disturbed soil |
| Cleanup | Chips, backfill, done | Hole to fill, soil to bring in |
| Replant in the same spot? | Offset a few feet, or grind deeper | Yes, after backfilling |
| Right choice for | Nearly everything | Four specific cases below |
Stump grinding by size: small stumps under 12 inches run $75 to $150, medium 12 to 24 inches $150 to $300, and large stumps over 24 inches $250 to $600+.
What Grinding Actually Does
A grinder is a machine with a rotating cutting wheel that reduces wood to chips a bit at a time. The operator works across the stump and out over the surface roots flaring away from it, taking the whole thing down below ground level.
Standard depth is six to twelve inches below grade, which is enough for lawn, for most landscaping, and for the stump to be invisible. Deeper grinding is available and costs more, and it’s worth specifying if you’re planting in the same spot or laying hardscape.
What’s left is a pile of chips mixed with soil, in a shallow depression. Two things worth knowing:
You get a lot more chips than you expect. A stump’s volume expands considerably once it’s chipped. Decide beforehand whether they stay as mulch elsewhere on the property or get hauled away.
The chips are not good soil. Fresh wood chips tie up nitrogen as they decompose. If you’re filling the hole to grow grass, mix in topsoil rather than raking chips flat and seeding into them.
The roots stay in the ground and decay over several years. For nearly every purpose, that’s fine. They’re not going to sprout, with one exception noted below, and they gradually break down and improve the soil.
When You Genuinely Need Full Removal
1. Building or hardscaping directly on the spot. A foundation, a footing, a retaining wall, a concrete pad. Decaying roots below create voids as they break down, and voids under a structure mean settlement. If a permit is involved, the requirement usually is too.
2. Planting a new tree in exactly the same position. Grinding leaves an intact root system and a mass of chips that make a poor planting site. The easy answer is usually to offset the new tree a few feet, which what to plant after a tree removal covers. If it truly has to go in the same hole, extraction is the honest route.
3. Certain root diseases. Some pathogens persist in dead root tissue and can move to a replacement tree planted nearby. If a tree came out because of a root disease rather than storm damage or size, ask before deciding. A tree health assessment will have established which.
4. Species that sucker aggressively. This is the one exception to “roots don’t sprout.” Aspen, poplar, cottonwood, tree of heaven, and some elms can send up shoots from remaining roots after the trunk is gone, sometimes across a wide area of lawn. Tree suckers and root sprouts covers management. It doesn’t always mean full excavation, but it does mean planning for it.
Outside those four, full removal is usually paying substantially more for a large hole and a lawn repair project.
The Case for Doing It With the Removal
Grinding booked as part of the same visit as the tree removal is meaningfully cheaper than a separate trip, because mobilization and access are already handled. As an add-on it runs $150 to $500; as a standalone visit it’s priced on its own.
There are also good reasons not to leave a stump sitting:
Stumps attract pests. Decaying wood in contact with soil is exactly what termites and carpenter ants look for, and it’s not where you want them relative to your house. Do tree stumps attract termites covers the actual risk.
They’re a trip and mower hazard. A ground-level stump in a lawn is invisible from a mower seat, and hitting one wrecks the deck. Also see lawn equipment trunk damage, which is the same problem in reverse.
They can sprout. Some species will push growth from a live stump for years.
They hold up the yard. Landscaping, fencing, and irrigation all wait on the stump.
Call 811 First
This is not optional and it applies to homeowners renting a grinder as much as to us.
Utility lines run shallower than people assume, and stumps are frequently near property lines, meters, and service laterals, which is precisely where the lines are. Idaho’s 811 service arranges free locates before you dig. Call, wait for the marks, and grind inside them.
Also identify your irrigation lines and sprinkler heads before grinding. Those aren’t in the 811 locate, and a grinding wheel is very effective at finding them.
What It Costs and What Moves the Number
| Factor | Effect |
|---|---|
| Stump diameter | The main driver. $75 to $150 small, $150 to $300 medium, $250 to $600+ large |
| Number of stumps | Multiple stumps on one visit reduce per-stump cost |
| Grinding depth | Deeper for replanting or hardscape costs more |
| Access | Gates, slopes, and tight side yards limit machine size |
| Surface roots | Grinding out major root flares adds time |
| Rock and debris | Buried rock, old concrete, and fill dull teeth and slow the job |
| Chip disposal | Leaving them is cheaper than hauling them away |
Volume discounts apply for multiple stumps in one visit, which is worth knowing if a removal project left you with several. Multiple tree removal discounts covers the same logic on the removal side.
What to Do With the Hole
Once grinding is done, you have a depression full of chips and soil.
For lawn: remove most of the chips, backfill with topsoil, tamp, and seed or sod. Filling with chips alone gives you a sunken spot in a year and grass that won’t establish.
For a planting bed: chips can stay and be incorporated, with the caveat about nitrogen tie-up during decomposition.
For mulch elsewhere: grindings can be used as mulch in beds, though they’re coarser and more soil-mixed than clean arborist chips. Keep them off the trunks of other trees. How to mulch around trees covers doing that properly.
Expect some settling. As remaining roots decay over the next few years, the area may sink slightly. Topping it up once is normal.
Frequently Asked Questions
How deep does stump grinding go?
Standard is six to twelve inches below grade, which is enough for lawn and most landscaping. Deeper grinding is available at additional cost and is worth requesting if you plan to plant in the same spot or install hardscape over it. Say so before the work is quoted rather than after.
Do tree roots keep growing after stump grinding?
No. Once the trunk and stump are gone the root system has no way to produce energy and it decays over several years. The exception is suckering species like aspen, poplar, cottonwood, and some elms, which can push shoots from remaining roots for a season or two.
How much does stump grinding cost in Boise?
$75 to $150 for stumps under 12 inches, $150 to $300 for 12 to 24 inches, and $250 to $600+ for stumps over 24 inches. Booked as an add-on to a tree removal it runs $150 to $500. Multiple stumps in one visit cost less per stump.
Can I plant a new tree where the old stump was?
Not easily in the exact spot, because grinding leaves the root system intact and the hole full of wood chips. The simplest approach is to offset the new tree a few feet. If it must go in the same position, either grind substantially deeper or excavate the stump.
Is stump removal better than grinding?
Only for specific situations: building or hardscaping on the spot, planting in the exact same position, certain root diseases, or aggressively suckering species. For everything else, grinding achieves the same visible result faster, cheaper, and with far less disruption to the yard.
Deal With It While the Crew Is Already There
The cheapest time to grind a stump is the day the tree comes down.
Call (509) 351-8404 or request your free on-site estimate. Our stump grinding service covers Boise, Meridian, Nampa, Caldwell, Eagle, and Garden City, with volume pricing for multiple stumps and grinding depth set to whatever you’re planning to do with the space.