Leaves are probably the most common feature used to identify trees. But in winter, when so many trees have dropped their ...

Slippery elm is a supplement made from the inner bark of the slippery elm tree (Ulmus rubra), native to North America. Taking it as a supplement may offer a few health benefits, such as improving ...

An area on the outside of a tree trunk that appears to be stained white or looks wet during summer is likely bacterial ...

To prevent the further spread of Dutch Elm disease to surrounding trees, the Central Park Conservancy and NYC Parks have cut ...