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The Daily Insight

What are invasive tree roots?

Author

Christopher Pierce

Published May 24, 2026

What are invasive tree roots?

Invasive tree roots are a common problem for homeowners and in commercial settings. They interfere with streets and sidewalks, sneak into septic lines, and cause trip hazards. Tree root problems are not always solved by the removal of the tree, as the stump or remaining roots may continue to grow.

How do you get rid of invasive tree roots?

Simply expose the roots you want gone by cutting into them. Using a drill is also a good option; just drill holes right into the roots you wish to be rid of. With a paintbrush, paint bleach onto the roots where you have cut into them or fill the holes. If the root doesn’t die, then repeat this process.

How do you landscape around large tree roots?

Do use an organic material such as wood chips or shredded wood. Spread it in an even layer 3 to 4 inches deep over the surface of the soil. Do make the area of mulch as large as it needs to be to completely cover the exposed roots, even if that means covering an area of lawn.

Which is the most invasive tree in the world?

Invasive tree roots are a common problem for many homeowners. If left unattended, aggressive roots will cause disruption to pavements, buildings and patio slabs. From fast-growing Japanese knotweed to the classic willow tree, there are many plants and trees to avoid planting in your garden if you are concerned about their roots.

Are there trees that don’t have invasive roots?

If there are other things, such as walkways close to your planting area, there are trees that don’t have invasive roots for a small yard. Here are the advantages of these trees and find the one that’s best for you. Tree roots like lots of water! Sometimes that makes trees move underground structures, such as sewer lines and water tanks.

How big of a space do you need for an invasive tree?

You should never plant a tree closer than 10 feet (3 m.) from the foundation of a home, and trees with invasive roots may need a distance 25 to 50 feet (7.5 to 15 m.) of space. Slow-growing trees generally have less destructive roots than those that grow quickly.

What are the dangers of invasive root systems?

These invasive root systems will not only damage your lawnmower, in fact, the lawnmower will do more damage on the tree. Running over roots, bumping into trunks, etc. all greatly damage the health of your trees and can cause eventual decline or death.

Are there any trees that are non invasive?

However, sometimes you purchase a home with existing trees or you might be uninformed when you install a problem plant. Knowledge about problem tree roots and planting only those with non-invasive root systems is the ideal situation. Some tree root systems such as Japanese fir, Acacia and Vine maples are considered minimally invasive.

How big are the roots of an invasive tree?

Most of the mass of a tree’s root system is in the top 18-24 inches (46-61 cm.) of soil. The roots spread at least as far as the most distant tips of the branches, and invasive tree roots often spread much farther. Invasive tree roots can be very destructive.

How does an invasive tree affect your house?

Invasive tree roots often extend further than you might think. Along the way, they meet underground pipes, wall foundations, and even sidewalks. But the determined invasive tree root system will not let anything stop its growth. The relentless tree would gut sidewalks, block pipes, and tilt the house sympathetically toward them.

When to plant a tree with non invasive roots?

Non-invasive root systems are less likely to bother sewers or sidewalks. Plant a tree with non-invasive roots to resolve issues created by expanded roots. Don’t forget to plant at the right time of year.