What to do with the wood chip pile after grinding
My old neighbor, a retired arborist named Frank who had spent 30 years grinding stumps around Indianapolis, once told me that the single biggest argument he used to have with homeowners was not about price. It was about the chip pile.
The grinder finishes, the operator looks at the homeowner, and says "do you want me to haul these off?" The homeowner looks at what appears to be an entire pickup bed of shredded wood and dirt, sees a $150 cleanup charge on the quote, and says yes, please. Fifteen years later, Frank is still shaking his head, because roughly 80 percent of those chips would have been better staying right where they were.
Here is what happens to a stump's chip pile and what your actual options are.
How many chips are we talking about
A stump grinder mixes wood chips and soil in roughly a 70/30 ratio. For every inch of stump diameter, expect about 0.05 cubic yards of mixed chip-and-soil debris. The math, using rough figures:
- 12-inch stump: 0.6 cubic yards (about a wheelbarrow full)
- 18-inch stump: 0.9 cubic yards (3 wheelbarrow loads)
- 24-inch stump: 1.2 cubic yards (a pickup-bed half-full)
- 36-inch stump: 1.8 cubic yards (a pickup-bed full)
A single small stump does not generate much. A five-stump job with 18-inch averages generates about 4.5 cubic yards, which is a significant pile.
Option 1, leave in place as backfill
My default. The operator rakes the chips back into the ground hole where the stump used to be. The chips sit maybe 4 inches above original grade because they occupy more volume than the stump root did. Over 6 to 18 months, the chips settle, compact, and mostly disappear into the soil. The spot becomes a shallow depression you top-dress with 2 to 4 inches of fresh topsoil and reseed.
Cost: zero.
Downside: the chips pull nitrogen out of the surrounding soil as they decompose. If you overseed lawn on top within 6 months, the grass will be yellow for a season unless you add a nitrogen-heavy fertilizer (46-0-0, 21-0-0, or a good starter fertilizer like Scotts Turf Builder Triple Action).
My standard recipe: 20-pound bag of urea-based fertilizer (46-0-0) on a 10-by-10 area of fresh chips before topsoil goes down. About $22 at Rural King. Grass is green by year two.
Option 2, spread as mulch on existing beds
Fresh stump-grindings make decent mulch for ornamental beds, around mature shrubs, and along wooded property edges. The mulch layer suppresses weeds, retains moisture, and feeds the soil as it breaks down.
Two rules:
- Do not pile chips directly against living tree trunks (volcano-mulching causes rot) or vegetable crops (nitrogen drawdown)
- Do not use grindings from known diseased trees (Dutch elm, oak wilt) as mulch around healthy trees of the same species; pathogens can transfer
A 3 to 4-inch layer of stump-grindings around your existing landscape beds is functionally equivalent to a $150 bulk-mulch delivery. I loaded up my landscape beds with chips from a 20-inch maple grind in spring 2024 and did not buy bark mulch that year. Saved $180.
Option 3, compost pile
Stump grindings are an excellent carbon source for composting. A typical backyard compost pile needs a 25:1 to 30:1 carbon-to-nitrogen ratio. Fresh chips run about 300:1 carbon-heavy, so you need to pair them with a strong nitrogen source (grass clippings, kitchen scraps, fresh manure, spent coffee grounds) to compost properly.
If you have an active compost pile, dump the chips in layers. If you do not, the chip pile left alone will compost eventually, just slowly, maybe 2 to 4 years for a large pile to fully break down.
Option 4, crew haul-away
Most crews will haul chips off for an additional fee. Typical pricing:
- $3 to $5 per diameter inch of total stump material
- Minimum haul-away fee: $100
- Some crews charge a flat truck-bed fee: $125 to $200
For a five-stump job averaging 18 inches total, that is $270 in haul-away. For a single 14-inch stump, $100 minimum (even though the chip pile is maybe a wheelbarrow).
Haul-away is worth paying when:
- You have nowhere to put the chips on your property
- The stump was a known diseased or invasive species
- The pile is in a spot you cannot easily rake or wheelbarrow from
- You are staging the yard for sale and cannot leave a pile
Option 5, DIY haul to a facility
Most metro areas have a yard-waste facility that accepts wood chips for $30 to $80 per ton, or sometimes free for residents. In Indiana, the local Covanta yard-waste depot takes up to 2 cubic yards free per visit for residents. In suburban Chicago, the Lake County SWALCO facility charges $30 per pickup-truck-load.
DIY haul requires: a pickup truck or trailer, a tarp, a snow shovel, and 2 to 4 hours of your life. For a single stump it is rarely worth it. For a multi-stump job where the crew wants $300 to haul and your facility is 15 minutes away, DIY is $10 in fuel plus a Saturday morning.
Option 6, give them away
The absolute cheapest option. Post on Craigslist free, Facebook Marketplace free, or Nextdoor the morning after the grind: "Free wood chips, 5 yards, you haul." Typical takers: landscapers filling mulch gaps, homeowners starting a chicken run, gardeners topping up a hugelkultur bed. Most will show up within 48 hours and clean the pile for you.
I did this after a five-stump job in March 2024. The entire pile was gone in 18 hours. Two trips from one very appreciative landscaper.
The $300 move I made last spring
April 2024, five stumps ground in my front yard. Crew quoted $280 for haul-away on top of $525 for the grinding itself. I said no to haul-away, let the crew rake the chips back in the holes and into a pile at the curb, and posted "free mulch" on Nextdoor with a photo. A landscape crew from three streets over showed up at 7 AM the next morning and cleared the entire pile into their dump trailer for a mulch job they were starting that day.
Saved $280. Cost me one Nextdoor post.
This is the default move now unless I have a specific reason to want the chips gone same-day.
One species to haul away regardless
Black walnut. The roots and chips contain juglone, a natural herbicide that kills sensitive plants nearby. Do not use black walnut grindings as mulch around tomatoes, potatoes, azaleas, rhododendrons, or most vegetable crops. If you grind a black walnut, pay the haul-away or take the chips to the yard-waste facility yourself. Do not leave them on your own property if you have a vegetable garden.
Decision tree
Chips back in the hole, topsoil and fertilizer on top: default for most jobs, zero cost.
Chips as mulch on beds: if you have mature ornamental beds and are not dealing with diseased wood.
Crew haul-away: if the pile is genuinely in the way or the wood is diseased or black walnut.
DIY haul: if the crew's haul fee is over $200 and your facility is close.
Give away: if you have 24 to 48 hours of tolerance and a Nextdoor account.
Run your job through the stump cost calculator with haul-away toggled both ways and see how much the cleanup line adds. That number is your budget for which option to take.
Related: replanting after grinding, the full guide.