Because only a sapling can grow.
Girdling is the process of stripping bark from around the trunk of the tree after time,the tree died.
Girdling damages the phloem tissue which is meant for transporting the food material to the growing parts of the root & shoot system hence it is fatal for trees.
To kill a standing tree, you can cut a ring around its trunk (a process known as girdling) to disrupt the flow of nutrients and water from roots to the rest of the tree. This essentially starves the tree and causes it to eventually die.
A cut through the inner layer of bark, and passes all the way around the trunk of the tree is called girdling. This was a common method to kill trees in the early days of the US, when settlers were clearing land. The tree above the cut is now effectively dead. It may sprout from the stump, but everything above the girdling is gone.
Bark covers a tree trunk.
the outer part of a tree trunk
the outer part of a tree trunk
Tree trunk is a compound word
The trunk of a tree is called a 'bole'.
Cellulose makes the trunk of a tree sturdy.
Is a wooden tree trunk a compound
the outer part of a tree trunk