The most common theory of the cause of stem girdling roots, is that they develop as a result of trees being planted too deeply. When root systems are buried, less oxygen and water is available. The roots will grow up towards the surface of the soil and tend to encircle the trunk.

Can a tree recover from girdling roots?

This procedure is done with compressed air from an Air Spade®, a tool designed to remove soil without damaging tree tissues. Some trees can regain their health after removal of girdling roots. Trees already in advanced decline will be unlikely to recover. Each case is different and results are difficult to predict.

Can a girdled tree be saved?

Treatment for a girdled tree includes first aid to clean the wound and keep the wood from drying out. Repair grafting or bridge grafting provides a bridge whereby nutrients can be transported across the tree. … This new growth will form, like a scab, over the wound and allow the tree to survive.