How stump grinding works
A stump grinder chews the stump into wood chips with a spinning cutting wheel. The stump is ground several inches below the soil line, usually 4 to 12 inches, so the spot can be covered with soil and sod or planted. The main roots stay in the ground and break down over time.
Grinding is quicker and less disruptive than digging a stump out. Full stump removal pulls out the root ball too, and is mostly needed when something will be built in the exact spot.
What stump grinding costs
Price is based mainly on the stump's width, plus the number of stumps, how hard the wood is, how deep you want it ground, and whether a grinder can fit through your gate. Many companies have a minimum charge, so grinding several stumps in one visit is usually cheaper per stump. If you're also having a tree removed, ask for both in one quote.
What happens to the wood chips
Grinding leaves a pile of chips roughly the size of the stump. Ask whether the price includes:
- Hauling the chips away
- Filling the hole with topsoil
- Leaving the chips for you to use as mulch
Why it's worth removing old stumps
- They're a trip hazard and get in the way of mowing.
- Rotting stumps can attract termites and other wood-boring insects.
- Some trees send up new sprouts from the stump and roots.
- You get the space back for grass, plants or a patio.
Underground lines
Stumps often sit near irrigation, water, gas or cable lines. A careful company will have underground utilities marked through Sunshine 811 before grinding, and will ask you where your sprinkler lines run.
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Stump grinding questions
How long does stump grinding take?
A single average-sized stump usually takes well under an hour to grind. Large stumps and multiple stumps take longer.
Can I plant a new tree where the stump was?
It's better to plant a few feet to the side. The leftover roots and wood chips break down slowly and can make it hard for a new tree to settle in.
Will the stump grow back after grinding?
Most trees won't regrow once the stump is ground well below grade. A few kinds can sprout from leftover roots, and those sprouts can be cut or treated as they appear.