Tree roots do not simply keep growing the way they did when the tree was alive, but they do not all die right away either. What happens next depends on the tree species and how much living tissue is still connected below ground.
What Happens to Roots After the Stump Is Ground?
Professional stump grinding removes the visible stump and grinds down some material below the surrounding grade. This clears the part of the tree that was getting in the way of mowing or landscaping.
The grinding itself normally does not remove the entire root system. Roots that spread out from the base, sometimes several feet in different directions, are largely left in the ground once the stump is gone.
Can Roots Keep Growing?
Whether remaining roots stay active depends partly on whether any living tissue is still connected to them. Some tree species can send up sprouts or suckers from roots that still have living tissue, even after the visible stump has been ground away. Other species are far less likely to do this.
This does not mean the roots are continuing to grow the way a healthy tree’s roots would. It means part of the root system may still have enough life in it to push up new shoots for a while, which is a different thing than ongoing normal growth.
How Long Do Remaining Roots Stay Underground?
Many roots gradually decay once the tree and stump are gone, breaking down over time as soil organisms work through the wood. How long that takes varies by tree species, root size, and local soil and moisture conditions, so there is no set timeline that fits every situation in Westminster or elsewhere.
Larger structural roots generally take longer to break down than smaller feeder roots. In the meantime, remaining roots can persist underground for a considerable period without necessarily causing any problems for typical yard use.
When Might Remaining Roots Need Attention?
If you notice sprouting, or if leftover roots seem to be interfering with a new planting bed, a walkway, or another project, that is a different situation than simply waiting for old roots to break down on their own. Stump grinding and complete root removal are different services with different goals.
If roots from the old tree are causing an ongoing issue on your property, ask about tree root removal to discuss whether a more complete approach makes sense for your specific situation.
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