When the system works properly, the tree collects more energy than it uses to survive to grow, defend itself, set seed, etc. There are many ways to disrupt this system, as we see as we look at the next myths. Myth 2 Depth of root growth equals the height of the tree s crown. Very few species of trees have deep taproot systems. Most trees have almost all roots within three feet of the soil surface.
Roots live in association with other organisms mycorrhizae.
It is very easy to compact soil and destroy roots. Problems are associated with planting depth and methods. Effects of grade change may take years to show up. Prevention is the best approach with construction damage. It is better to remove a tree in the beginning than to try to save it when it has been irreparably damaged.