Stump grinding, which chews the stump into chips 15 to 30 cm below grade, is the right choice for almost every Fraser Valley homeowner: it is fast, costs roughly $100 to $400+ per stump, and lets you re-turf, garden or replant beside the spot. Full stump removal, excavating the entire root plate, costs several times more and is really only needed for construction.
The two terms get used interchangeably in quotes, and they should not be. Here is what each one actually involves, what they cost locally, and the short list of situations where excavation is worth the money.
What is the actual difference?
Grinding removes the visible stump; excavation removes the stump and its root system. They are different machines, different site impacts and different invoices.
Stump grinding uses a machine with a carbide-toothed wheel that sweeps across the stump, milling it into chips from the top down. The operation continues below ground level, typically 15 to 30 cm under grade, until what remains is a hole full of wood chips and soil where a stump used to be. The surrounding roots stay in the ground and decay naturally over the following years. Machines range from walk-behind units that fit through a 90 cm gate to tracked grinders for big firs.
Stump removal (excavation) digs the whole root plate out with an excavator, roots and all, leaving a genuine crater that gets backfilled with soil. On a mature Fraser Valley conifer the root plate can be several metres across and surprisingly deep, so this is machine work with real site disturbance: equipment access, torn ground and truckloads of material to haul.
What does each option cost in the Fraser Valley?
Grinding is priced per stump, usually by diameter, and access matters. These are indicative local ranges for planning, not quotes:
| Option | Typical cost | Site impact |
|---|---|---|
| Grinding, small stump (under 30 cm) | $100 to $200 | Minimal; walk-behind machine |
| Grinding, medium stump (30 to 60 cm) | $150 to $300 | Minimal to modest |
| Grinding, large conifer stump (60 cm+) | $250 to $500+ | Modest; larger machine access needed |
| Excavation of stump and roots | Often $1,000+, machine time based | Major; excavator access, backfill, restoration |
Two pricing notes from how these jobs actually run. First, grinding multiple stumps in one visit is cheaper per stump than separate trips, and cheapest of all when booked with the tree removal itself, since the crew and machine are already there. Second, ask what happens to the grindings: leaving the chip mound costs nothing, while chip removal and imported topsoil add a haul fee. For where stump costs sit in the overall job, see our tree removal cost guide.
When is grinding the right answer?
For lawns, gardens, and nearly everything cosmetic or practical short of building, grinding wins. It solves the problems people actually have with stumps:
- Mowing and appearance. The stump is gone below grade; grass or garden goes over the top.
- Trip hazards in lawns and play areas disappear.
- Carpenter ants and decay fungi lose their habitat. Decaying stumps are a standing invitation to both, and grinding removes the buffet.
- Suckering species like cottonwood and cherry are knocked back hard, though persistent suckers from remaining roots can need follow-up.
- Replanting nearby works fine, offset a metre or two into undisturbed soil.
Grinding is also the answer beside fences, patios and foundations, where an excavator could not work without collateral damage. This is the standard service on our stump grinding page, and on cleared lots with many stumps it scales far better than digging; our lot clearing jobs pair mass grinding with brush and debris removal.
When do you genuinely need full excavation?
When something is going to be built where the roots are. The honest list is short:
- Construction. Footings, foundations, garages and additions cannot bear on decaying root wood, so builders specify full removal under structures. Geotechnical and building requirements govern here; your builder or the BC Building Code resources will define what the excavation must achieve.
- Driveways, retaining walls and pools. Roots decaying under hardscape eventually mean settlement and cracks, so the roots come out before the base goes down.
- Septic fields and major drainage work. Root systems and new perforated pipe do not coexist; excavation happens as part of the larger dig.
- Root-disease management. Where a tree died of a root disease and a susceptible replacement is planned in the same spot, removing infected root wood reduces carryover. This is a diagnosis-driven call, not a default.
If your situation is not on that list, you are probably being sold a bigger job than you need. An easy check: ask the contractor why grinding will not work for your specific plan, and listen for an answer about the future use of the ground rather than the stump itself.
What happens to the roots left after grinding?
They decay in place, and for most species that is the end of the story. Conifer roots, which is most of what comes out of Fraser Valley yards, do not resprout; the wood breaks down over years and the soil gradually settles, which is why topping up a ground spot with soil a season later is normal. Decaying roots do temporarily tie up nitrogen in the surrounding soil, so lawns patched over fresh grindings appreciate extra soil and a bit of fertility in year one.
The exceptions are the suckering broadleaves, cottonwood and poplar especially, which can send shoots up from live roots for a few seasons. Persistent suckers are manageable with repeated removal. If the tree came down because it was hazardous, it is also worth checking whether its neighbours share the same problem; our checklist of signs a tree is dangerous covers what to look for, and a danger tree assessment can look at the rest of the property in one visit. If the tree fell in a storm, our guide on what to do when a tree falls on your house explains why stump work usually lands outside the insurance claim.
The bottom line
Grind it unless you are building on it. Grinding solves appearance, mowing, pests and replanting for a fraction of excavation’s cost and disruption, while excavation is the right call under future foundations, driveways and septic fields. If you have a stump, or a row of them, request a free estimate with a photo and rough diameter, or book grinding alongside a removal through our stump grinding page and save the second trip charge.
Frequently Asked Questions
Can I plant a new tree where a stump was ground?
Yes, with an offset. The ground spot is full of wood chips and remaining root wood, which tie up nitrogen as they decay. The standard practice is planting the new tree a metre or two to the side of the old stem, in undisturbed soil, rather than in the chip-filled hole. Grass and garden beds re-establish over a ground stump easily once fresh soil is brought in.
Will roots keep growing after a stump is ground?
For most conifers, no. Cedars, firs and hemlocks do not resprout from roots, so the root system simply decays in place over the years. Some deciduous species, notably cottonwood, poplar and cherry, can send up suckers from surviving roots, which need follow-up treatment. Tell your contractor the species so you get an honest answer about regrowth risk.
How deep does stump grinding go?
Typically 15 to 30 cm below grade for lawns and replanting, which is enough to re-turf or garden over the spot. Grinders can go deeper where a specific project needs it, subject to what the machine and site allow. For construction, footings or driveways, deeper excavation is usually specified by the builder instead.
Do I have to do anything with a stump at all?
No. Left alone, a stump slowly decays over many years depending on species and size. The trade-offs are appearance, the mowing obstacle, suckering in some species, and the fact that decaying stumps attract carpenter ants and fungi. Many acreage owners leave back-forty stumps and only deal with the ones in lawns and near structures.
Can a stump be ground if it is beside a fence or foundation?
Usually yes. Grinding wheels can work close to hard surfaces, and smaller machines fit through standard gates for backyard stumps. The operator will stay slightly off structures and utilities, which can leave a sliver of stump against a fence line. Call or check for buried services before grinding, since roots and utility lines share the same soil.
Published July 25, 2026 · Last updated July 25, 2026 · Fraser Valley Tree Service