Most trees can be easily identified by inspecting their leaves, seed pods, flowers, bark, or shape.

If you're outfitting your yard with more trees, you may already know how costly these plants are. Here are 16 of our favorite ...

Bradford pear trees are banned in Ohio, Pennsylvania and South Carolina. More states are looking to ban the trees, best known for their stinky smell.

It’s the branch of a tree, but this tree is no good for a tree house. Take a look at the thorns, which can be found up and down the trunk, and also potently arming the branches. You won’t be ...

The field guide helps identify common Indiana woodlot trees. Each week, the Intro to Trees of Indiana web series will offer a sneak peek at one species from the book, paired with an ID That Tree video ...

The whistling-thorn acacias of East Africa are renowned for hosting aggressive species of ants. The ants defend the trees against destructive browsing from the likes of elephants and giraffes, in ...

A few trees, like the beech and some oak species, hold onto their leaves in the winter. Some shrubs, like winterberry, retain fruit or berries in the winter. Look for thorns. Honey locust and ...

The Rio Grande Valley was once covered in forest. One man is trying to bring it back. The Tamaulipan thorn forest once covered 1 million acres on both sides of the border. Restoring even a ...

Whistling-thorn trees, the dominant tree species in much of East Africa, provide nectar and shelter for native ants. In exchange, the ants defend the trees against browsers by biting them and ...

Scientists Identify the Gene Behind Thorny Roses and Other Prickly Plants A recent study could pave the way to cultivating various thornless plants, making them easier to grow and potentially more ...

Scaly-tailed squirrels use thorny tail scales for grip on smooth trees. New models reveal the physics behind this, inspiring ...