Once a tree is down you have a stump, and you have a decision that most people did not know was a decision. Grinding and removal are not two words for the same service.
Stump grinding
A machine with a rotating cutting wheel chews the stump down into wood chips, typically to somewhere between four and twelve inches below grade, sometimes deeper on request.
What you end up with: the visible stump is gone, the hole is backfilled with the resulting grindings mixed with soil, and the root system stays in the ground to decay naturally over the following years.
Advantages: faster, less expensive, far less disruptive. Equipment can often reach constrained back-yard sites. Surrounding lawn, irrigation, and hardscape are much less likely to be disturbed. The area is usable almost immediately.
Limitations: the roots remain. For most purposes that is completely fine, but not all.
Full stump removal
The stump and the major root system are excavated and hauled off, generally requiring heavier equipment and considerably more digging.
What you end up with: a genuinely empty hole where the tree used to be, needing fill, and a significantly larger disturbed footprint around it.
Advantages: the root mass is gone, which matters for construction and for certain replanting situations.
Limitations: more expensive, sometimes substantially. Requires equipment access. Tears up a much larger area — expect to be repairing lawn and possibly irrigation. On a large tree the hole can be considerable.
How to actually decide
Ask one question: what is going in that spot?
Lawn or garden bed — grind it. Grinding is more than adequate. Have the grindings removed rather than backfilled if you plan to plant, since decomposing wood chips tie up nitrogen. Bring in topsoil instead.
New tree in roughly the same spot — usually full removal, or shift position. A new tree needs room for its own roots, and the old root mass gets in the way. The easier and cheaper answer is often to plant the replacement a reasonable distance away rather than pay to excavate. If the previous tree died of root disease, replanting into that soil is a separate and more serious consideration — worth discussing with an arborist first.
Patio, driveway, shed, foundation, retaining wall — full removal. Anything structural requires the root mass gone. Decaying roots under a hardscape create voids and settling over time, and settling under a slab is expensive to fix.
Fence line — depends. If posts must go where roots are, removal. Otherwise grinding and working around what remains is often fine.
Nothing in particular — grind it. Cheapest path to a normal-looking yard.
Why leaving the stump is usually a poor idea
Aside from appearance and mowing around it:
- Sprouting. Many species resprout vigorously from a cut stump. Big leaf maple, cottonwood, and many ornamentals will send up shoots repeatedly, and you will be cutting them for years.
- Pests. A decaying stump is habitat, including for insects you would rather not host near the house.
- Decay fungi. A stump keeps the fungal community active in that soil. Where root disease was involved, an untreated stump maintains the reservoir.
- Trip hazard, particularly once it is grown over and no longer obvious.
Questions to ask before you agree to the work
- How deep? Get a number rather than a promise to grind it down.
- Grindings hauled or left? Meaningfully affects both price and what you can plant there.
- Surface roots included? Large radiating roots at the surface are often a separate item — clarify.
- Utilities located? Grinding is digging. Underground lines must be marked beforehand. In Washington, call 811 before excavation; a professional operator will handle this, and one who shrugs it off is a problem.
- Irrigation and lighting? Point out anything buried nearby. Grinders do not distinguish between roots and drip line.
- Restoration included? Whether topsoil and seed are part of the job or your project afterward.
On the chemical stump removers
The products sold to dissolve a stump mostly accelerate decay somewhat. They take a long time — often years — do not eliminate the stump, and are not a practical substitute if you want the space usable this season. For a small stump in an out-of-the-way spot, fine. For anything else, grinding is the realistic option.
Cascade Tree Works serves Vancouver, Battle Ground, Camas, Brush Prairie, La Center, Washougal, Ridgefield, and Hockinson. Our ISA Certified Arborists can look at your tree and tell you plainly what it needs. Request a residential estimate.
2
