Since the early 2000s, the emerald ash borer has been a thorn in homeowners’ sides—or anyone with trees in their yard. These invasive insect pests cause oft-catastrophic damage to ash trees, and ...

These ancient trees persisted for nearly 200 million years until they all but vanished. Now they line city streets.

What Does a Pine Grosbeak Look Like? As the cold settles in, backyards quiet down. But just when you think you’re familiar ...

The best color is on new growth — branches that are just a year or two old. Older branches will turn grayish or brown. “To ...

Christmas trees—and conifers in general—have made some surprising cameos throughout U.S. history, author Trent Preszler ...