First . . . the data. Mistletoe is the common name for a parasitic plant with yellowish flowers and glutinous white berries that grow attached to, and within, the vascular system of a tree or shrub. Mistletoe does not normally kill a tree,...

Recently, we posted a quiz designed to test the tree knowledge of the general public, but, today, we wanted to share a similar quiz. However, we made this quiz for tree-care professionals (who should have aced Monday’s quiz). Scroll down to...

Are you interested in testing your tree-teligence? Take our tree-knowledge quiz below and see how you do! 

Each question is multiple choice; scroll down for the answers. We designed this quiz for laypersons, but we have published a quiz...

While not terribly common, many trees bear sharp thorns along their twigs, branches or trunks. Often, thorns are seen as problematic traits, and trees that bear them are often avoided during installations. Some have even produced thornless...

Like many other facets of the natural world, trees are the subject of innumerable myths and misunderstandings. As professional arborists, our job is to help separate fact from fiction, thereby allowing our clients and readers to better care...

Tree bark is roughly akin to the skin of animals; it helps to define the boundary between the internal and external world, and it provides protection against a variety of threats. While bark fails to attract the same level of attention that...

The more ecologists learn about the world, the more it becomes apparent that all living things are connected. Trees provide numerous examples of this, as even youngsters understand that trees provide animals with fruit, shelter and other...

Here's what you should know about fast-growing pioneer species in your landscaping.