How to kill tree roots naturally

Written by liana christianson
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How to kill tree roots naturally
Over time, tree roots increase in size. (Jupiterimages/liquidlibrary/Getty Images)

After cutting down a tree, the roots can make it difficult to remove the entire tree stump. Tree roots grow outward, and over time, as soil erodes, tree roots often appear on the surface. You can kill these tree roots naturally without the use of chemicals. Epsom salt, also known as magnesium sulphate, will kill the roots of a tree by absorbing moisture from the wood. By depleting the roots of the needed moisture, they will become dry, therefore killing the tree roots naturally.

Skill level:
Moderate

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Things you need

  • Chainsaw
  • Bucket
  • Epsom salt
  • Drill
  • Drill bit
  • Funnel
  • Grub hoe

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Instructions

  1. 1

    Cut the tree stump down level with the ground. Remove soil as needed to expose the entire base of the tree.

  2. 2

    Drill holes into the top of the tree stump. Make 2.5 cm (1 inch) holes in all four corners of the stump. Drill the holes to a depth of 30 cm (1 foot) or as deep as you can.

  3. 3

    Fill a bucket with warm water. Pour 454 gr (16 oz) of Epsom salt into the water. Stir the mixture until dissolved.

  4. 4

    Place a funnel into one of the drilled holes. Pour one-quarter of the mixture into the hole. Repeat this process on all four holes.

  5. 5

    Dig around the roots of the tree using a grub hoe. Expose as much of the roots as possible.

  6. 6

    Pour the Epsom salt mixture over the exposed roots. Ensure you apply a thick layer. This will prevent the roots from absorbing nutrients and water.

  7. 7

    Reapply the mixture each week for one month. After one month, the bark should start showing signs of dryness. Dead wood will be dark and brittle. When the wood is dead, remove the stump and dead roots. If the bark is light in colour, reapply the mixture as needed.

Tips and warnings

  • Read and follow all manufacturer's warnings and instructions.

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