The tree is gone and the stump has been ground down to a pile of chips. Your yard finally looks clear. But a tree’s root system can spread well beyond its canopy, and most of it is still underground.
So what happens to those roots after a stump grinding service? Do they keep growing, rot away, or cause problems later? Here’s what Columbia County homeowners should know.
What Stump Grinding Actually Removes
A stump grinder uses a spinning cutting wheel to chew the stump into small wood chips. According to Iowa State University Extension, grinders typically reach 8 to 12 inches below ground level and can also grind away large lateral roots near the surface.
That means the visible stump and the top of the root flare are gone. What’s left is:
- A shallow hole filled with wood chips and soil
- The deeper roots, which stay in the ground
- Smaller roots spread out across the yard
What Happens to the Roots Left Behind
They Stop Growing
Roots need the tree’s leaves to make food. Once the trunk and stump are gone, most roots can’t keep growing. As an expert answer on Ask Extension puts it, ground roots “won’t continue to grow.”
They Slowly Break Down
Without a living tree to support them, the remaining roots decay naturally. Fungi and other organisms break the wood down and return it to the soil. Smaller roots go first. Thick roots and any large stump pieces can take years, and an untreated stump can take more than a decade to rot on its own.
Some Trees Try to Sprout Again
If the tree was still alive when it was cut, some roots may send up shoots, sometimes called suckers. Certain species, like sweetgum, are known for this. Cutting the sprouts back as they appear, or treating the fresh stump, usually ends the problem over time.
When You Need Stump Grinding Root Removal
For most yards, grinding the stump and leaving the deeper roots to decay is all you need. But there are times when more thorough tree stump root removal makes sense:
- You’re building in that spot. A patio, shed, addition, or driveway needs solid ground, not decaying wood that can settle over time.
- You’re planting a new tree nearby. Old roots and wood chips can get in the way of new roots.
- Surface roots are a tripping hazard. Exposed roots across a lawn can be ground down along with the stump.
- Roots are near pipes or a foundation. Removing large roots close to underground lines can prevent trouble later.
- Sprouts keep coming back. Grinding out more of the root system can stop persistent regrowth.
If you just want to reseed grass, removing most of the wood chips and adding fresh topsoil gives new grass a better start. Fresh grindings can make it hard for turf to take root.
Why Leaving a Stump Isn’t the Better Option
Some homeowners skip grinding and let the stump rot on its own. That can take years, and in the meantime, an old stump can attract wood-boring insects, send up new growth, and become a tripping hazard for kids and guests. It also takes up space you could be using.
At Eben Gray’s Tree Service, our team removes stumps and root systems with state-of-the-art equipment, then cleans up the grindings so your yard is left smooth and ready for landscaping. We’ll walk you through what’s staying in the ground, what’s coming out, and what you’ll need to do for new grass, plantings, or construction.
If you’ve got a stump in Appling, Evans, Martinez, or anywhere in Columbia County, our stump grinding service can clear it out for good. Call (706) 309-8110 for a free, no-obligation estimate.
Frequently Asked Questions
Do Tree Roots Keep Growing After Stump Grinding?
In most cases, no. Without the trunk and leaves, roots can’t make food to keep growing. Some species may push up a few sprouts for a while, but those usually stop once they’re cut back.
How Long Does It Take Roots to Decay After Stump Grinding?
Small roots break down fairly quickly. Large roots can take several years, depending on the species, root size, and soil conditions.
How Deep Does a Stump Grinding Service Go?
Most stump grinders reach about 8 to 12 inches below ground level, which is deep enough for lawns and most landscaping.
Can I Plant a New Tree in the Same Spot?
It’s usually better to plant a few feet away. Leftover roots and wood chips can make it harder for a new tree to establish.
What Should I Do With the Wood Chips?
You can use them as mulch in garden beds or put some back into the hole. For grass, remove most of the chips and add topsoil first.