A stump grinder is a rotating wheel with cutting teeth that chips a stump down below ground level. It comes as a dedicated machine or as an attachment.
The important distinction is what it leaves behind. It grinds the stump to a depth and produces a pile of chips; it does not remove the lateral root system, and it does not leave a hole.
Whether that is the right outcome depends entirely on what the ground is for afterward — and that is the question worth settling before choosing the method.
Where it excels
Finished areas — lawns, established landscaping, near buildings and pavement — where digging a root plate out would cause far more disruption than the stump is worth.
Individual stumps rather than whole sites. For a handful of trees removed from a yard, grinding is quicker, tidier and cheaper.
Situations where the surrounding surface must be preserved, since the machine works from above rather than excavating around.
Where it stops
It leaves the lateral roots in the ground. Those decay over years and can settle, which matters under a slab, a driveway or anything that must stay level.
It leaves chips — a considerable volume of them, mixed with soil — which are not good fill and generally have to be removed if the area is being built on or seeded.
It is slow across a whole cleared site. Grinding several dozen stumps individually is far more expensive than an excavator working through them.
Choosing between grinding and excavating
Grinding for finished ground, individual stumps and minimal disruption. Excavating for building pads, driveways, septic areas, tillage and anywhere the root system genuinely has to be gone.
The most common mistake is grinding on a building site because it sounded tidier, then dealing with settlement over decaying roots. If a structure is going on top, the roots come out.
Questions
Common questions on this
Is grinding as good as digging the stump out?
For a different purpose, yes. Grinding removes the stump and leaves the lateral roots; excavating removes the root plate and leaves a hole. For a lawn or a finished area, grinding is less disruptive and perfectly adequate. For anything you are building or driving on, the roots need to come out, because what decays leaves a void.
What happens to the chips?
You get a substantial pile, mixed with soil, and there is usually more than expected. They are not good fill and they are not ideal to seed into. Agree in advance whether they are being removed, spread or left, because it is a common source of disappointment on an otherwise tidy job.
Which is cheaper for a whole cleared site?
An excavator, comfortably, once there are more than a handful of stumps. Grinding is priced per stump and is efficient for a few; working through a cleared acreage with a grinder is far slower than a machine that digs them out as it goes.
Keep planning
Related planning guides
- Excavators: the machine that digs and liftsThe only common clearing machine that can pull material out of the ground rather than push it across the surface.
- Clearing heavy woods and mature timberOnce stems get large enough, the question stops being how to cut them and becomes what to do with the volume.
- What has to happen before final gradingGrading does not fix a site, it reveals it — everything left in the ground shows up as a settled hollow a year later.
- What happens after the machine leavesThe day the machine leaves is the beginning of the vulnerable period, not the end of the project.
- Clearing rocky groundRock is the condition most likely to turn a fixed price into a conversation, because nobody can see what is under the surface.
Everything else is in the planning workspace.
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Services this relates to
Evansville Mulching is a free matching service, not a contractor. Nothing on this page is a determination about your property — a contractor standing on the ground is the only person who can make one.
Covering 10 towns across the Evansville tri-state area, and all 14 services.