We get calls all the time asking about cutting tree roots. You are probably wondering why is there a picture of a gravel road and a tree down? Well this tree provides a great example of what happens when tree roots are cut. Read on to find out more.

What Happens After Cutting Tree Roots?

This tree is a great example of what happens to the root structure when the tree's roots are cut. First, here is a brief review of tree roots in general. There are 3 major types of tree root systems: tap root, lateral root, and heart root. Although they vary greatly, they have one thing in common. All of them have lateral roots extending from the trunk, at or just below the surface level. Second, for the purpose of this example, I'm talking mostly about lateral roots. These roots provide a significant amount of structural stability to trees. Finally, usually lateral roots extend symmetrically away from the trunk of the tree. Now, back to my example.

As you can see from this picture, the bulk of the roots are on the sides away from the road. When we look at the view from the bottom, it is even more apparent, that the bulk of the roots are on the side away from the road. The main take away from this situation is that the tree never recovered from when the road was constructed. I am assuming that the tree was already mature, past it's initial root growth stage, and beyond a point where it could generate new lateral roots when the damage was inflicted.

This tree's lateral roots grew in an unusual pattern because it was on the side of a creek. As you can see, the roots twisted around to seek soil, but they it still grew a significant number of large lateral roots. Most likely, the tree seeded on the side of this established creek, and it was able to adapt to the situation.

Final Takeaway: Cutting Tree Roots is Almost Never Advisable

All living things can adapt, but only to a certain extent. Cutting major tree roots on any size tree can cause major, irreparable damage. Roots provide stability and nutrients to trees. Trees with compromised root systems are more likely to fail. I believe the reason that these trees survived was because they were in very protected locations. In more exposed locations, they probably wouldn't have lived as long.