Does the bark on birch trees grow back?

The bark of birch trees does not grow back. Like all other trees, the bark of birch trees is produced by the cambium, which is a thin layer of cells located between the wood and the outer bark. As the tree grows, the cambium produces new wood cells on the inside and new bark cells on the outside. The outer bark eventually becomes too thick and cracks, and is then shed from the tree. However, the cambium remains intact, and continues to produce new bark cells, so the tree can continue to grow and produce new bark.