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Of course cutting all the tree roots will in fact kill the tree. A general rule for cutting tree roots is don’t cut more than 25% of the root system. Measure the trunk diameter at about 4 feet from the ground.

Take that measurement and multiply it by 6. Mark off that distance from the trunk and that is about where 25% of the roots can be cut. See image below. For example if you have a 12″ diameter trunk 4 feet Estimated Reading Time: 2 mins. Sep 29, Generally, you can safely prune roots that are times the diameter away from your tree. So, if your tree has a diameter of 3 feet, only cut tree roots feet away from the tree.

Mark the area you’ll cut, and dig a hole all the way around the root removing tree armor it is completely exposed.

Use a root saw to prune the tree. May 31, If it is a large root, cutting it could damage the tree. If it’s a smaller root depending on the size of the tree, it can usually be removed without any major issues. We also want to determine the best place to cut the root. You don’t want to just start hacking away at the root any old place. You want to measure the diameter of the trunk and then multiply that number by eight. This will represent the closest place in inches where you can cut the shrubdisposal.barted Reading Time: 3 mins.

Mar 29, Best offers for your Garden - shrubdisposal.bar to Cut Tree Roots Without Killing the Tree. Trees ornament our lawns, provide shade. You should only cut tree roots when it is absolutely necessary. Some situations in which cutting a tree’s roots may be warranted include the following: When a tree is growing too large for the yard in which it is located or When a tree is growing dangerously close to the foundation of your home.