Add Yahoo as a preferred source to see more of our stories on Google. Periderm, also called bark, is an outer protective plant layer. Peeling bark is natural for certain species of tree, but in other ...

Why do trees have bark? Julien, age 6, Melbourne. This is a great question, Julien. We are so familiar with bark on trees, that most of us just take it for granted. But bark is one of the most complex ...

So often we choose a tree because of its flowers, leaves, fall color or its fruit. Often, we forget about the bark. However, on many trees, the bark is the most interesting part of the tree. This can ...