Typically, you can recognize American Beech from their very smooth bark. However, a lot of Beeches you’ll find seem to be rough and bumpy. Why? This is diseased bark caused by a type of bark beetle called Beech Scales. That’s right, trees can get sick too! These Beech Scales are invasive, meaning they do not belong here and are actually native to Europe. In 1890, the beetles were accidentally introduced into Nova Scotia, Canada. Without any natural predators, the Beech Scales spread quickly across Canada and the Northeast United States. These beetles dig into the trees to eat their sap, leaving behind white wax and open wounds in the tree’s bark. Once damaged, the trees are open to infectious fungus! This is what causes those sickly bumps on the bark.