The reason for damage due to girdling is that the phloem layer of tissue just below the bark is responsible for carrying food produced in the leaves by photosynthesis to the roots. Without this food, the roots ultimately die and cease sending water and minerals to the leaves. Then the leaves die.

How long does it take for a tree to die after girdling?

Be patient when looking for the results, as the tree will appear fine until the need for nutrients from the roots becomes great in the following spring. Sometimes it might take two years for the tree to die.

Can a tree survive being girdled?

A tree can usually survive if less than half its circumference is girdled. Even so, the area with the embedded material is weak and susceptible to breaking.